ID

VAR-202203-0043

CVE

CVE-2022-0847

TITLE

Linux kernel Security hole

DESCRIPTION

A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system. Summary: The Migration Toolkit for Containers (MTC) 1.5.4 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/): 1995656 - CVE-2021-36221 golang: net/http/httputil: panic due to racy read of persistConn after handler panic 5. This update provides security fixes, bug fixes, and updates the container images. Description: Red Hat Advanced Cluster Management for Kubernetes 2.4.3 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. See the following Release Notes documentation, which will be updated shortly for this release, for additional details about this release: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.4/html/release_notes/ Security updates: * golang.org/x/crypto: empty plaintext packet causes panic (CVE-2021-43565) * nats-server: misusing the "dynamically provisioned sandbox accounts" feature authenticated user can obtain the privileges of the System account (CVE-2022-24450) * nanoid: Information disclosure via valueOf() function (CVE-2021-23566) * nodejs-shelljs: improper privilege management (CVE-2022-0144) * search-ui-container: follow-redirects: Exposure of Private Personal Information to an Unauthorized Actor (CVE-2022-0155) * node-fetch: exposure of sensitive information to an unauthorized actor (CVE-2022-0235) * follow-redirects: Exposure of Sensitive Information via Authorization Header leak (CVE-2022-0536) * openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates (CVE-2022-0778) * imgcrypt: Unauthorized access to encryted container image on a shared system due to missing check in CheckAuthorization() code path (CVE-2022-24778) * golang: crash in a golang.org/x/crypto/ssh server (CVE-2022-27191) * opencontainers: OCI manifest and index parsing confusion (CVE-2021-41190) Related bugs: * RHACM 2.4.3 image files (BZ #2057249) * Observability - dashboard name contains `/` would cause error when generating dashboard cm (BZ #2032128) * ACM application placement fails after renaming the application name (BZ #2033051) * Disable the obs metric collect should not impact the managed cluster upgrade (BZ #2039197) * Observability - cluster list should only contain OCP311 cluster on OCP311 dashboard (BZ #2039820) * The value of name label changed from clusterclaim name to cluster name (BZ #2042223) * VMWare Cluster creation does not accept ecdsa-sha2-nistp521 ssh keys (BZ #2048500) * clusterSelector matchLabels spec are cleared when changing app name/namespace during creating an app in UI (BZ #2053211) * Application cluster status is not updated in UI after restoring (BZ #2053279) * OpenStack cluster creation is using deprecated floating IP config for 4.7+ (BZ #2056610) * The value of Vendor reported by cluster metrics was Other even if the vendor label in managedcluster was Openshift (BZ #2059039) * Subscriptions stop reconciling after channel secrets are recreated (BZ #2059954) * Placementrule is not reconciling on a new fresh environment (BZ #2074156) * The cluster claimed from clusterpool cannot auto imported (BZ #2074543) 3. Bugs fixed (https://bugzilla.redhat.com/): 2024938 - CVE-2021-41190 opencontainers: OCI manifest and index parsing confusion 2030787 - CVE-2021-43565 golang.org/x/crypto: empty plaintext packet causes panic 2032128 - Observability - dashboard name contains `/` would cause error when generating dashboard cm 2033051 - ACM application placement fails after renaming the application name 2039197 - disable the obs metric collect should not impact the managed cluster upgrade 2039820 - Observability - cluster list should only contain OCP311 cluster on OCP311 dashboard 2042223 - the value of name label changed from clusterclaim name to cluster name 2043535 - CVE-2022-0144 nodejs-shelljs: improper privilege management 2044556 - CVE-2022-0155 follow-redirects: Exposure of Private Personal Information to an Unauthorized Actor 2044591 - CVE-2022-0235 node-fetch: exposure of sensitive information to an unauthorized actor 2048500 - VMWare Cluster creation does not accept ecdsa-sha2-nistp521 ssh keys 2050853 - CVE-2021-23566 nanoid: Information disclosure via valueOf() function 2052573 - CVE-2022-24450 nats-server: misusing the "dynamically provisioned sandbox accounts" feature authenticated user can obtain the privileges of the System account 2053211 - clusterSelector matchLabels spec are cleared when changing app name/namespace during creating an app in UI 2053259 - CVE-2022-0536 follow-redirects: Exposure of Sensitive Information via Authorization Header leak 2053279 - Application cluster status is not updated in UI after restoring 2056610 - OpenStack cluster creation is using deprecated floating IP config for 4.7+ 2057249 - RHACM 2.4.3 images 2059039 - The value of Vendor reported by cluster metrics was Other even if the vendor label in managedcluster was Openshift 2059954 - Subscriptions stop reconciling after channel secrets are recreated 2062202 - CVE-2022-0778 openssl: Infinite loop in BN_mod_sqrt() reachable when parsing certificates 2064702 - CVE-2022-27191 golang: crash in a golang.org/x/crypto/ssh server 2069368 - CVE-2022-24778 imgcrypt: Unauthorized access to encryted container image on a shared system due to missing check in CheckAuthorization() code path 2074156 - Placementrule is not reconciling on a new fresh environment 2074543 - The cluster claimed from clusterpool can not auto imported 5. See the following Release Notes documentation, which will be updated shortly for this release, for additional details about this release: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.3/html/release_notes/ Security updates: * nanoid: Information disclosure via valueOf() function (CVE-2021-23566) * nodejs-shelljs: improper privilege management (CVE-2022-0144) * follow-redirects: Exposure of Private Personal Information to an Unauthorized Actor (CVE-2022-0155) * node-fetch: exposure of sensitive information to an unauthorized actor (CVE-2022-0235) * follow-redirects: Exposure of Sensitive Information via Authorization Header leak (CVE-2022-0536) Bug fix: * RHACM 2.3.8 images (Bugzilla #2062316) 3. Bugs fixed (https://bugzilla.redhat.com/): 2043535 - CVE-2022-0144 nodejs-shelljs: improper privilege management 2044556 - CVE-2022-0155 follow-redirects: Exposure of Private Personal Information to an Unauthorized Actor 2044591 - CVE-2022-0235 node-fetch: exposure of sensitive information to an unauthorized actor 2050853 - CVE-2021-23566 nanoid: Information disclosure via valueOf() function 2053259 - CVE-2022-0536 follow-redirects: Exposure of Sensitive Information via Authorization Header leak 2062316 - RHACM 2.3.8 images 5. ========================================================================== Ubuntu Security Notice USN-5317-1 March 09, 2022 linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-kvm, linux-oem-5.14, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-25636) Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano Giuffrida discovered that hardware mitigations added by ARM to their processors to address Spectre-BTI were insufficient. A local attacker could potentially use this to expose sensitive information. (CVE-2022-23960) Max Kellermann discovered that the Linux kernel incorrectly handled Unix pipes. A local attacker could potentially use this to modify any file that could be opened for reading. (CVE-2022-0847) Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano Giuffrida discovered that hardware mitigations added by Intel to their processors to address Spectre-BTI were insufficient. A local attacker could potentially use this to expose sensitive information. (CVE-2022-0001, CVE-2022-0002) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: linux-image-5.13.0-1016-kvm 5.13.0-1016.17 linux-image-5.13.0-1017-aws 5.13.0-1017.19 linux-image-5.13.0-1017-azure 5.13.0-1017.19 linux-image-5.13.0-1019-gcp 5.13.0-1019.23 linux-image-5.13.0-1020-raspi 5.13.0-1020.22 linux-image-5.13.0-1020-raspi-nolpae 5.13.0-1020.22 linux-image-5.13.0-1021-oracle 5.13.0-1021.26 linux-image-5.13.0-35-generic 5.13.0-35.40 linux-image-5.13.0-35-generic-64k 5.13.0-35.40 linux-image-5.13.0-35-generic-lpae 5.13.0-35.40 linux-image-5.13.0-35-lowlatency 5.13.0-35.40 linux-image-aws 5.13.0.1017.18 linux-image-azure 5.13.0.1017.17 linux-image-gcp 5.13.0.1019.17 linux-image-generic 5.13.0.35.44 linux-image-generic-64k 5.13.0.35.44 linux-image-generic-lpae 5.13.0.35.44 linux-image-gke 5.13.0.1019.17 linux-image-kvm 5.13.0.1016.16 linux-image-lowlatency 5.13.0.35.44 linux-image-oem-20.04 5.13.0.35.44 linux-image-oracle 5.13.0.1021.21 linux-image-raspi 5.13.0.1020.25 linux-image-raspi-nolpae 5.13.0.1020.25 linux-image-virtual 5.13.0.35.44 Ubuntu 20.04 LTS: linux-image-5.13.0-1017-aws 5.13.0-1017.19~20.04.1 linux-image-5.13.0-1017-azure 5.13.0-1017.19~20.04.1 linux-image-5.13.0-1019-gcp 5.13.0-1019.23~20.04.1 linux-image-5.13.0-1021-oracle 5.13.0-1021.26~20.04.1 linux-image-5.13.0-35-generic 5.13.0-35.40~20.04.1 linux-image-5.13.0-35-generic-64k 5.13.0-35.40~20.04.1 linux-image-5.13.0-35-generic-lpae 5.13.0-35.40~20.04.1 linux-image-5.13.0-35-lowlatency 5.13.0-35.40~20.04.1 linux-image-5.14.0-1027-oem 5.14.0-1027.30 linux-image-aws 5.13.0.1017.19~20.04.10 linux-image-azure 5.13.0.1017.19~20.04.7 linux-image-gcp 5.13.0.1019.23~20.04.1 linux-image-generic-64k-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-generic-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-generic-lpae-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-lowlatency-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-oem-20.04 5.14.0.1027.24 linux-image-oem-20.04b 5.14.0.1027.24 linux-image-oem-20.04c 5.14.0.1027.24 linux-image-oem-20.04d 5.14.0.1027.24 linux-image-oracle 5.13.0.1021.26~20.04.1 linux-image-virtual-hwe-20.04 5.13.0.35.40~20.04.20 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. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2022:0819-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:0819 Issue date: 2022-03-10 CVE Names: CVE-2021-0920 CVE-2021-4154 CVE-2022-0330 CVE-2022-0435 CVE-2022-0492 CVE-2022-0847 CVE-2022-22942 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8. 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 Enterprise Linux Real Time for NFV (v. 8) - x86_64 Red Hat Enterprise Linux for Real Time (v. 8) - x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: improper initialization of the "flags" member of the new pipe_buffer (CVE-2022-0847) * kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920) * kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154) * kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330) * kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435) * kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492) * kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942) 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): * kernel symbol '__rt_mutex_init' is exported GPL-only in kernel 4.18.0-348.2.1.rt7.132.el8_5 (BZ#2038423) * kernel-rt: update RT source tree to the RHEL-8.5.z3 source tree (BZ#2045589) 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/): 2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation 2034514 - CVE-2021-4154 kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout 2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush 2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation 2048738 - CVE-2022-0435 kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS 2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation 2060795 - CVE-2022-0847 kernel: improper initialization of the "flags" member of the new pipe_buffer 6. Package List: Red Hat Enterprise Linux Real Time for NFV (v. 8): Source: kernel-rt-4.18.0-348.20.1.rt7.150.el8_5.src.rpm x86_64: kernel-rt-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-core-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-core-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-devel-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-kvm-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-modules-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debuginfo-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-devel-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-kvm-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-modules-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-modules-extra-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 8): Source: kernel-rt-4.18.0-348.20.1.rt7.150.el8_5.src.rpm x86_64: kernel-rt-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-core-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-core-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-devel-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-modules-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debuginfo-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-devel-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-modules-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm kernel-rt-modules-extra-4.18.0-348.20.1.rt7.150.el8_5.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2021-0920 https://access.redhat.com/security/cve/CVE-2021-4154 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-0435 https://access.redhat.com/security/cve/CVE-2022-0492 https://access.redhat.com/security/cve/CVE-2022-0847 https://access.redhat.com/security/cve/CVE-2022-22942 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2022-002 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYippFNzjgjWX9erEAQhDwRAAjsGfW6qXFI81H8xov/wQnw/PdsUOhzDl ISzJEeXALEQCloLH+UDcgo/wV1es00USfBo1H/SpDc5ahjBWP2pbo8QtIRKT6h/k ord4KsAMGjqWRI+zaGbaFoL0q4okMG9H6r731TnhX06CaLXLui8iUJrQLziHo02t /AihF9dW30/w4tXyKeMc73D1lKHImQQFfJo5xpIo8Mm7+6GFrkne8Z46SKXjjyfG IODAcU3wA0C93bbtR4EHEbenVyVVaE5Phn40vxxF00+AQTHoc5nYpOJbDLI3bi1F GbEKQ5pf0jkScwlfEHtHkmjPk92PA/wV41BhPoJw8oKshH4RRxml4Ps0KldI4NrQ ypmDLZ3CfJ+saFbNLN5BARCiqJavF5A4yszHZ5QuopmC1RJx6/rAuE79KkeB0JvW IOaXPzzc05dCqdyVBvNAu+XpVlTbe+XGBR0LalYYjYWxQSrEYAYQ005mcvEWOPRm QfPSM7eOaAzo9RGrMirTm0Gz9BJ0TbvNGiMmMTpLdb6akx1BQcQ5bpAjUCQN0O7j KIFri0FxflweqZswTchfdbW74VuUyTVaeFYKGhp5hFPV6lFkDUFEFC71ANvPaewE X1Z5Ae0gFMD8w5m5eePHqYuEaL6NHtYctHlBh0ef6mrvsKq9lmxJpdXrZUO+eP4w nEhPbkKSmMY= =CLN6 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

other

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-04-18T22:01:20.361000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE