ID

VAR-202201-0496

CVE

CVE-2021-4197

TITLE

Red Hat Security Advisory 2022-5626-01

DESCRIPTION

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system. Attackers can use this vulnerability to bypass the restrictions of the Linux kernel through Cgroup Fd Writing to elevate their privileges. Summary: An update for kernel is now available for Red Hat Enterprise Linux 8.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat CodeReady Linux Builder EUS (v. 8.4) - aarch64, ppc64le, x86_64 Red Hat Enterprise Linux BaseOS EUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64 3. Security Fix(es): * kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012) * kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729) * kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-32250) * kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197) * kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203) * kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * Failed to reboot after crash trigger (BZ#2060747) * conntrack entries linger around after test (BZ#2066357) * Enable nested virtualization (BZ#2079070) * slub corruption during LPM of hnv interface (BZ#2081251) * sleeping function called from invalid context at kernel/locking/spinlock_rt.c:35 (BZ#2082091) * Backport request of "genirq: use rcu in kstat_irqs_usr()" (BZ#2083309) * ethtool -L may cause system to hang (BZ#2083323) * For isolated CPUs (with nohz_full enabled for isolated CPUs) CPU utilization statistics are not getting reflected continuously (BZ#2084139) * Affinity broken due to vector space exhaustion (BZ#2084647) * kernel memory leak while freeing nested actions (BZ#2086597) * sync rhel-8.6 with upstream 5.13 through 5.16 fixes and improvements (BZ#2088037) * Kernel panic possibly when cleaning namespace on pod deletion (BZ#2089539) * Softirq hrtimers are being placed on the per-CPU softirq clocks on isolcpu’s. (BZ#2090485) * fix missed wake-ups in rq_qos_throttle try two (BZ#2092076) * NFS4 client experiencing IO outages while sending duplicate SYNs and erroneous RSTs during connection reestablishment (BZ#2094334) * using __this_cpu_read() in preemptible [00000000] code: kworker/u66:1/937154 (BZ#2095775) * Need some changes in RHEL8.x kernels. (BZ#2096932) 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1903244 - CVE-2020-29368 kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check 2035652 - CVE-2021-4197 kernel: cgroup: Use open-time creds and namespace for migration perm checks 2036934 - CVE-2021-4203 kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses 2064604 - CVE-2022-1012 kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak 2086753 - CVE-2022-1729 kernel: race condition in perf_event_open leads to privilege escalation 2092427 - CVE-2022-32250 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v.8.4): Source: kernel-4.18.0-305.57.1.el8_4.src.rpm aarch64: bpftool-4.18.0-305.57.1.el8_4.aarch64.rpm bpftool-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-core-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-cross-headers-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-core-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-devel-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-modules-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-modules-extra-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-devel-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-headers-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-modules-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-modules-extra-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-tools-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-tools-libs-4.18.0-305.57.1.el8_4.aarch64.rpm perf-4.18.0-305.57.1.el8_4.aarch64.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm python3-perf-4.18.0-305.57.1.el8_4.aarch64.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm noarch: kernel-abi-stablelists-4.18.0-305.57.1.el8_4.noarch.rpm kernel-doc-4.18.0-305.57.1.el8_4.noarch.rpm ppc64le: bpftool-4.18.0-305.57.1.el8_4.ppc64le.rpm bpftool-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-core-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-cross-headers-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-core-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-devel-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-modules-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-modules-extra-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-devel-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-headers-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-modules-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-modules-extra-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-tools-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-tools-libs-4.18.0-305.57.1.el8_4.ppc64le.rpm perf-4.18.0-305.57.1.el8_4.ppc64le.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm python3-perf-4.18.0-305.57.1.el8_4.ppc64le.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm s390x: bpftool-4.18.0-305.57.1.el8_4.s390x.rpm bpftool-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm kernel-4.18.0-305.57.1.el8_4.s390x.rpm kernel-core-4.18.0-305.57.1.el8_4.s390x.rpm kernel-cross-headers-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debug-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debug-core-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debug-devel-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debug-modules-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debug-modules-extra-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-305.57.1.el8_4.s390x.rpm kernel-devel-4.18.0-305.57.1.el8_4.s390x.rpm kernel-headers-4.18.0-305.57.1.el8_4.s390x.rpm kernel-modules-4.18.0-305.57.1.el8_4.s390x.rpm kernel-modules-extra-4.18.0-305.57.1.el8_4.s390x.rpm kernel-tools-4.18.0-305.57.1.el8_4.s390x.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm kernel-zfcpdump-4.18.0-305.57.1.el8_4.s390x.rpm kernel-zfcpdump-core-4.18.0-305.57.1.el8_4.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm kernel-zfcpdump-devel-4.18.0-305.57.1.el8_4.s390x.rpm kernel-zfcpdump-modules-4.18.0-305.57.1.el8_4.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-305.57.1.el8_4.s390x.rpm perf-4.18.0-305.57.1.el8_4.s390x.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm python3-perf-4.18.0-305.57.1.el8_4.s390x.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.s390x.rpm x86_64: bpftool-4.18.0-305.57.1.el8_4.x86_64.rpm bpftool-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-core-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-cross-headers-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-core-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-devel-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-modules-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-modules-extra-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-devel-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-headers-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-modules-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-modules-extra-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-tools-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-tools-libs-4.18.0-305.57.1.el8_4.x86_64.rpm perf-4.18.0-305.57.1.el8_4.x86_64.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm python3-perf-4.18.0-305.57.1.el8_4.x86_64.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm Red Hat CodeReady Linux Builder EUS (v. 8.4): aarch64: bpftool-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm kernel-tools-libs-devel-4.18.0-305.57.1.el8_4.aarch64.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm kernel-tools-libs-devel-4.18.0-305.57.1.el8_4.ppc64le.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debug-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-tools-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm kernel-tools-libs-devel-4.18.0-305.57.1.el8_4.x86_64.rpm perf-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm python3-perf-debuginfo-4.18.0-305.57.1.el8_4.x86_64.rpm These packages are GPG signed by Red Hat for security. 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More contact details at https://access.redhat.com/security/team/contact/ Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYuFkSdzjgjWX9erEAQhDCxAAknsy8K3eg1J603gMndUGWfI/Fs5VzIaH lxGavTw8H57lXRWbQYqJoRKk42uHAH2iCicovyvowJ5SdfnChtAVbG1A1wjJLmJJ 0YDKoeMn3s1jjThivm5rWGQVdImqLw+CxVvb3Pywv6ZswTI5r4ZB4FEXW8GIR1w2 1FeHTcwUgNLzeBLdVem1T50lWERG0j0ZGUmv9mu4QMDeWXoSoPcHKWnsmLgDvQif dVky3UsFoCJ783WJOIctmY97kOffqIDvZdbPwajAyTByspumtcwt6N7wMU6VfI+u B6bRGQgLbElY6IniLUsV7MG8GbbffZvPFNN/n6LdnnFgEt1eDlo6LkZCyPaMbEfx 2dMxJtcAiXmydMs5QXvNJ3y2UR2fp/iHF8euAnSN3eKTLAxDQwo3c4KvNUKAfFcF OAjbyLTilLhiPHRARG4aEWCEUSmfzO3rulNhRcIEWtNIira3/QMFG9qUjNAMvzU1 M4tMSPkH35gx49p2a6arZceUGDXiRwvrP142GzpAgRWt/GrydjAsRiG4pJM2H5TW nB5q7OuwEvch8+o8gJril5uOpm6eI1lylv9wTXbwjpzQqL5k2JcgByRWx8wLqYXy wXsBm+JZL9ztSadqoVsFWSqC0yeRkuF185F4gI7+7azjpeQhHtJEix3bgqRhIzK4 07JERnC1IRg= =y1sh -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-5127-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso May 02, 2022 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2021-4197 CVE-2022-0168 CVE-2022-1016 CVE-2022-1048 CVE-2022-1158 CVE-2022-1195 CVE-2022-1198 CVE-2022-1199 CVE-2022-1204 CVE-2022-1205 CVE-2022-1353 CVE-2022-1516 CVE-2022-26490 CVE-2022-27666 CVE-2022-28356 CVE-2022-28388 CVE-2022-28389 CVE-2022-28390 CVE-2022-29582 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. The security impact is negligible as CAP_SYS_ADMIN inherently gives the ability to deny service. CVE-2022-1016 David Bouman discovered a flaw in the netfilter subsystem where the nft_do_chain function did not initialize register data that nf_tables expressions can read from and write to. CVE-2022-1158 Qiuhao Li, Gaoning Pan, and Yongkang Jia discovered a bug in the KVM implementation for x86 processors. A local user with access to /dev/kvm could cause the MMU emulator to update page table entry flags at the wrong address. CVE-2022-1199, CVE-2022-1204, CVE-2022-1205 Duoming Zhou discovered race conditions in the AX.25 hamradio protocol, which could lead to a use-after-free or null pointer dereference. CVE-2022-1353 The TCS Robot tool found an information leak in the PF_KEY subsystem. CVE-2022-1516 A NULL pointer dereference flaw in the implementation of the X.25 set of standardized network protocols, which can result in denial of service. This driver is not enabled in Debian's official kernel configurations. This driver is not enabled in Debian's official kernel configurations. For the stable distribution (bullseye), these problems have been fixed in version 5.10.113-1. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAmJwRg9fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0S8bw//bsMGzd7yC5QHR9/G3Vxn10HSYSy9vkPdOrg9nt58xCygMTvj9G4Ur7P5 SqPulxdczzDQgAEl/UVzmCifFMAbfi77w+0feha6zbrjz4yD8vtmk1caVmvbqOxE MsS7GKyFdRxvqWoCG1boIZZ5aKFCgXug4cY1nARJo4tadF3W3lZw9LP9+kdDJ0Z8 4zfzd1fa0tn6Bk9lqVvaks3zVxLA2Iev0yaLGpWPbsrqiSEnB/e1tWAQX7CVRUNT kY48YpAsGraOyjTMkmLyeXNYHwdNYfKR27DK/4CpXeVzqADlMqKtFOp0lvQhF54t KcBvJjvQsJ5ua7qjoJS97SLlMp7aZ3DvBnz28hn3vDp5iqFDTdLSmuPqJGy5JAOD JdijjSFCB2tTjDLBha+1mGAB2kJG8Kj0rcEiQTyFARejOoCIQg9R3EWfp5HI8DCn e4fGZdRATm6Qe9ofBlVmKmVpV36NaiZuy3UA8lhKTlJsjIhwnFB/WknG93/G64HK wMSkbbXDPoYgH06emh0RIXzddfHHO+mZBgUysHBX5pE0KdDazPleFGn5yOdlX8k5 5OT35Cga+hRVT9KNQfz4Me0AEt0kEwyMIUM6R49KvB8eQ9Az1OjO0yWONz4F5mDW 0HoSJCW+9gZzljIebL+odSyT/dvUZpP/xVzE8DRukDyn99GY6y4= =vCuc -----END PGP SIGNATURE----- . (CVE-2022-1734) It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. (CVE-2022-21123) It was discovered that some Intel processors did not completely perform cleanup actions on microarchitectural fill buffers. ========================================================================== Ubuntu Security Notice USN-5368-1 April 06, 2022 linux-azure-5.13, linux-oracle-5.13 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-azure-5.13: Linux kernel for Microsoft Azure cloud systems - linux-oracle-5.13: Linux kernel for Oracle Cloud systems Details: It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222) It was discovered that the network traffic control implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1055) Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. (CVE-2022-0492) J\xfcrgen Gro\xdf discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713) J\xfcrgen Gro\xdf discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715) Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39685) It was discovered that a race condition existed in the poll implementation in the Linux kernel, resulting in a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39698) It was discovered that the simulated networking device driver for the Linux kernel did not properly initialize memory in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-4135) Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not perform permission checks correctly in some situations. (CVE-2021-4197) Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did not properly validate meta-data coming from the device. A local attacker who can control an emulated device can use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43975) It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-44733) It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45095) It was discovered that the eBPF verifier in the Linux kernel did not properly perform bounds checking on mov32 operations. A local attacker could use this to expose sensitive information (kernel pointer addresses). (CVE-2021-45402) It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2021-45480) It was discovered that the BPF subsystem in the Linux kernel did not properly track pointer types on atomic fetch operations in some situations. A local attacker could use this to expose sensitive information (kernel pointer addresses). (CVE-2022-0264) It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly initialize memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-0382) Samuel Page discovered that the Transparent Inter-Process Communication (TIPC) protocol implementation in the Linux kernel contained a stack-based buffer overflow. A remote attacker could use this to cause a denial of service (system crash) for systems that have a TIPC bearer configured. (CVE-2022-0435) It was discovered that the KVM implementation for s390 systems in the Linux kernel did not properly prevent memory operations on PVM guests that were in non-protected mode. A local attacker could use this to obtain unauthorized memory write access. (CVE-2022-0516) It was discovered that the ICMPv6 implementation in the Linux kernel did not properly deallocate memory in certain situations. A remote attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2022-0742) It was discovered that the IPsec implementation in the Linux kernel did not properly allocate enough memory when performing ESP transformations, leading to a heap-based buffer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-27666) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.13.0-1021-azure 5.13.0-1021.24~20.04.1 linux-image-5.13.0-1025-oracle 5.13.0-1025.30~20.04.1 linux-image-azure 5.13.0.1021.24~20.04.10 linux-image-oracle 5.13.0.1025.30~20.04.1 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-5368-1 CVE-2021-28711, CVE-2021-28712, CVE-2021-28713, CVE-2021-28714, CVE-2021-28715, CVE-2021-39685, CVE-2021-39698, CVE-2021-4135, CVE-2021-4197, CVE-2021-43975, CVE-2021-44733, CVE-2021-45095, CVE-2021-45402, CVE-2021-45480, CVE-2022-0264, CVE-2022-0382, CVE-2022-0435, CVE-2022-0492, CVE-2022-0516, CVE-2022-0742, CVE-2022-1055, CVE-2022-23222, CVE-2022-27666 Package Information: https://launchpad.net/ubuntu/+source/linux-azure-5.13/5.13.0-1021.24~20.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.13/5.13.0-1025.30~20.04.1 . Description: Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.9.45. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2022:5878 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.openshift.com/container-platform/4.9/release_notes/ocp-4-9-release-notes.html Security Fix(es): * openshift: oauth-serving-cert configmap contains cluster certificate private key (CVE-2022-2403) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. You may download the oc tool and use it to inspect release image metadata as follows: (For x86_64 architecture) $ oc adm release info quay.io/openshift-release-dev/ocp-release:4.9.45-x86_64 The image digest is sha256:8ab373599e8a010dffb9c7ed45e01c00cb06a7857fe21de102d978be4738b2ec (For s390x architecture) $ oc adm release info quay.io/openshift-release-dev/ocp-release:4.9.45-s390x The image digest is sha256:1dde8a7134081c82012a812e014daca4cba1095630e6d0c74b51da141d472984 (For ppc64le architecture) $ oc adm release info quay.io/openshift-release-dev/ocp-release:4.9.45-ppc64le The image digest is sha256:ec1fac628bec05eb6425c2ae9dcd3fca120cd1a8678155350bb4c65813cfc30e All OpenShift Container Platform 4.9 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift Console or the CLI oc command. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.9/updating/updating-cluster-cli.html 3. Solution: For OpenShift Container Platform 4.9 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.9/release_notes/ocp-4-9-release-notes.html Details on how to access this content are available at https://docs.openshift.com/container-platform/4.9/updating/updating-cluster-cli.html 4. Bugs fixed (https://bugzilla.redhat.com/): 2009024 - Unable to complete cluster destruction, some ports are left over 2055494 - console operator should report Upgradeable False when SAN-less certs are used 2083554 - post 1.23 rebase: regression in service-load balancer reliability 2087021 - configure-ovs.sh fails, blocking new RHEL node from being scaled up on cluster without manual reboot 2088539 - Openshift route URLs starting with double slashes stopped working after update to 4.8.33 - curl version problems 2091806 - Cluster upgrade stuck due to "resource deletions in progress" 2095320 - [4.9] Bootimage bump tracker 2097157 - [4.9z] During ovnkube-node restart all host conntrack entries are flushed, leading to traffic disruption 2100786 - [OCP 4.9] Ironic cannot match "wwn" rootDeviceHint for a multipath device 2101664 - disabling ipv6 router advertisements using "all" does not disable it on secondary interfaces 2101959 - CVE-2022-2403 openshift: oauth-serving-cert configmap contains cluster certificate private key 2103982 - [4.9] AWS EBS CSI driver stuck removing EBS volumes - GetDeviceMountRefs check failed 2105277 - NetworkPolicies: ovnkube-master pods crashing due to panic: "invalid memory address or nil pointer dereference" 2105453 - Node reboot causes duplicate persistent volumes 2105654 - egressIP panics with nil pointer dereference 2105663 - APIRequestCount does not identify some APIs removed in 4.9 2106655 - Kubelet slowly leaking memory and pods eventually unable to start 2108538 - [4.9.z backport] br-ex not created due to default bond interface having a different mac address than expected 2108619 - ClusterVersion history pruner does not always retain initial completed update entry 5. Summary: The Migration Toolkit for Containers (MTC) 1.7.2 is now available. Description: The Migration Toolkit for Containers (MTC) enables you to migrate Kubernetes resources, persistent volume data, and internal container images between OpenShift Container Platform clusters, using the MTC web console or the Kubernetes API. Bugs fixed (https://bugzilla.redhat.com/): 2007557 - CVE-2021-3807 nodejs-ansi-regex: Regular expression denial of service (ReDoS) matching ANSI escape codes 2038898 - [UI] ?Update Repository? option not getting disabled after adding the Replication Repository details to the MTC web console 2040693 - ?Replication repository? wizard has no validation for name length 2040695 - [MTC UI] ?Add Cluster? wizard stucks when the cluster name length is more than 63 characters 2044591 - CVE-2022-0235 node-fetch: exposure of sensitive information to an unauthorized actor 2048537 - Exposed route host to image registry? connecting successfully to invalid registry ?xyz.com? 2053259 - CVE-2022-0536 follow-redirects: Exposure of Sensitive Information via Authorization Header leak 2055658 - [MTC UI] Cancel button on ?Migrations? page does not disappear when migration gets Failed/Succeeded with warnings 2056962 - [MTC UI] UI shows the wrong migration type info after changing the target namespace 2058172 - [MTC UI] Successful Rollback is not showing the green success icon in the ?Last State? field. 2058529 - [MTC UI] Migrations Plan is missing the type for the state migration performed before upgrade 2061335 - [MTC UI] ?Update cluster? button is not getting disabled 2062266 - MTC UI does not display logs properly [OADP-BL] 2062862 - [MTC UI] Clusters page behaving unexpectedly on deleting the remote cluster?s service account secret from backend 2074675 - HPAs of DeploymentConfigs are not being updated when migration from Openshift 3.x to Openshift 4.x 2076593 - Velero pod log missing from UI drop down 2076599 - Velero pod log missing from downloaded logs folder [OADP-BL] 2078459 - [MTC UI] Storageclass conversion plan is adding migstorage reference in migplan 2079252 - [MTC] Rsync options logs not visible in log-reader pod 2082221 - Don't allow Storage class conversion migration if source cluster has only one storage class defined [UI] 2082225 - non-numeric user when launching stage pods [OADP-BL] 2088022 - Default CPU requests on Velero/Restic are too demanding making scheduling fail in certain environments 2088026 - Cloud propagation phase in migration controller is not doing anything due to missing labels on Velero pods 2089126 - [MTC] Migration controller cannot find Velero Pod because of wrong labels 2089411 - [MTC] Log reader pod is missing velero and restic pod logs [OADP-BL] 2089859 - [Crane] DPA CR is missing the required flag - Migration is getting failed at the EnsureCloudSecretPropagated phase due to the missing secret VolumeMounts 2090317 - [MTC] mig-operator failed to create a DPA CR due to null values are passed instead of int [OADP-BL] 2096939 - Fix legacy operator.yml inconsistencies and errors 2100486 - [MTC UI] Target storage class field is not getting respected when clusters don't have replication repo configured

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

arbitrary

EXPLOIT AVAILABILITY

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-04-18T23:01:40.150000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE