ID

VAR-202012-1546

CVE

CVE-2020-29661

TITLE

Linux kernel Resource Management Error Vulnerability

DESCRIPTION

A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2021:0856-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0856 Issue date: 2021-03-16 CVE Names: CVE-2019-19532 CVE-2020-0427 CVE-2020-7053 CVE-2020-14351 CVE-2020-25211 CVE-2020-25645 CVE-2020-25656 CVE-2020-25705 CVE-2020-28374 CVE-2020-29661 CVE-2021-20265 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7. 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 Client (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Security Fix(es): * kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) * kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374) * kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661) * kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532) * kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427) * kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053) * kernel: performance counters race condition use-after-free (CVE-2020-14351) * kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645) * kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656) * kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) * kernel: increase slab leak leads to DoS (CVE-2021-20265) 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): * BUG: scheduling while atomic: memory allocation under spinlock in scsi_register_device_handler() (BZ#1619147) * WARNING in __iscsit_free_cmd during recovery Abort (BZ#1784540) * lpfc does not issue adisc to fcp-2 devices, does not respond to nvme targer that send an adisc. (BZ#1875961) * Panic in semctl_nolock.constprop.15+0x25b (BZ#1877264) * [RHEL 7.7][md]Crash due to invalid pool workqueue pointer, work queue race (BZ#1889372) * Guest crash on intel CPU with -cpu host,-spec-ctrl,+ibpb (BZ#1890669) * RHEL7.9 - kernel/uv: handle length extension properly (BZ#1899172) * Commit b144f013fc16a06d7a4b9a4be668a3583fafeda2 'i40e: don't report link up for a VF who hasn't enabled queues' introducing issues with VM using DPDK (BZ#1901064) * writing to /sys/devices/(...)/net/eno49/queues/tx-16/xps_cpus triggers kernel panic (BZ#1903819) * [Hyper-V][RHEL-7.9]video: hyperv_fb: Fix the cache type when mapping the VRAM Edit (BZ#1908896) * kvm-rhel7.9 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces. (BZ#1909036) * kernel: nvme nvme7: Connect command failed, error wo/DNR bit: 2 (BZ#1910817) * dm-mirror crashes from assuming underlying storage will have a non-NULL merge_bvec_fn (BZ#1916407) * watchdog: use nmi registers snapshot in hardlockup handler (BZ#1916589) * [DELL EMC 7.9 BUG] - Intel E810 NIC interfaces are not functional in RHEL 7.9 on system with AMD Rome CPUs (BZ#1918273) * [DELL EMC BUG] RHEL system log shows AMD-Vi error when system connected with Gen 4 NVMe drives. (BZ#1921187) 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/): 1781821 - CVE-2019-19532 kernel: malicious USB devices can lead to multiple out-of-bounds write 1795624 - CVE-2020-7053 kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c 1862849 - CVE-2020-14351 kernel: performance counters race condition use-after-free 1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c 1883988 - CVE-2020-25645 kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints 1888726 - CVE-2020-25656 kernel: use-after-free in read in vt_do_kdgkb_ioctl 1894579 - CVE-2020-25705 kernel: ICMP rate limiting can be used for DNS poisoning attack 1899804 - CVE-2020-28374 kernel: SCSI target (LIO) write to any block on ILO backstore 1901064 - Commit b144f013fc16a06d7a4b9a4be668a3583fafeda2 'i40e: don't report link up for a VF who hasn't enabled queues' introducing issues with VM using DPDK 1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free 1908827 - CVE-2021-20265 kernel: increase slab leak leads to DoS 1916589 - watchdog: use nmi registers snapshot in hardlockup handler 1919893 - CVE-2020-0427 kernel: out-of-bounds reads in pinctrl subsystem. 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: kernel-3.10.0-1160.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-1160.21.1.el7.noarch.rpm kernel-doc-3.10.0-1160.21.1.el7.noarch.rpm x86_64: bpftool-3.10.0-1160.21.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-headers-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1160.21.1.el7.x86_64.rpm perf-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: kernel-3.10.0-1160.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-1160.21.1.el7.noarch.rpm kernel-doc-3.10.0-1160.21.1.el7.noarch.rpm x86_64: bpftool-3.10.0-1160.21.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-headers-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1160.21.1.el7.x86_64.rpm perf-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: kernel-3.10.0-1160.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-1160.21.1.el7.noarch.rpm kernel-doc-3.10.0-1160.21.1.el7.noarch.rpm ppc64: bpftool-3.10.0-1160.21.1.el7.ppc64.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-3.10.0-1160.21.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debug-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-1160.21.1.el7.ppc64.rpm kernel-devel-3.10.0-1160.21.1.el7.ppc64.rpm kernel-headers-3.10.0-1160.21.1.el7.ppc64.rpm kernel-tools-3.10.0-1160.21.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-1160.21.1.el7.ppc64.rpm perf-3.10.0-1160.21.1.el7.ppc64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm python-perf-3.10.0-1160.21.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm ppc64le: bpftool-3.10.0-1160.21.1.el7.ppc64le.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debug-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-devel-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-headers-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-tools-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-1160.21.1.el7.ppc64le.rpm perf-3.10.0-1160.21.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm python-perf-3.10.0-1160.21.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm s390x: bpftool-3.10.0-1160.21.1.el7.s390x.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.s390x.rpm kernel-3.10.0-1160.21.1.el7.s390x.rpm kernel-debug-3.10.0-1160.21.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.s390x.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.s390x.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-1160.21.1.el7.s390x.rpm kernel-devel-3.10.0-1160.21.1.el7.s390x.rpm kernel-headers-3.10.0-1160.21.1.el7.s390x.rpm kernel-kdump-3.10.0-1160.21.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-1160.21.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-1160.21.1.el7.s390x.rpm perf-3.10.0-1160.21.1.el7.s390x.rpm perf-debuginfo-3.10.0-1160.21.1.el7.s390x.rpm python-perf-3.10.0-1160.21.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.s390x.rpm x86_64: bpftool-3.10.0-1160.21.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-headers-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1160.21.1.el7.x86_64.rpm perf-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: bpftool-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-1160.21.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-1160.21.1.el7.ppc64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.ppc64.rpm ppc64le: bpftool-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-1160.21.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.ppc64le.rpm x86_64: bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: kernel-3.10.0-1160.21.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-1160.21.1.el7.noarch.rpm kernel-doc-3.10.0-1160.21.1.el7.noarch.rpm x86_64: bpftool-3.10.0-1160.21.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-devel-3.10.0-1160.21.1.el7.x86_64.rpm kernel-headers-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1160.21.1.el7.x86_64.rpm perf-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: bpftool-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1160.21.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1160.21.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1160.21.1.el7.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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYFC579zjgjWX9erEAQirxQ/9FKZDGdDIPfGpiOwbkmMoqySgNxALO02Q mSTFgrFP/TM4sHCZxPhyuL1rbgPTVnrPKE8M/fTA2EzRQiMZud+vSy4Dvf/WwBXQ 1dStOQIJNmVohUXCRed043xJtfZxyLtteFoxhVjlVU2Eia1+f7d9t42vWQAXhtVB SuEDmitq+9dvv9S48bDJkZtSUkBvZTY9zCtjx6neqypg0j4KKwrYgr+Ui+VF3yJk xRtkw5SVhRiSFv8lBGKSkbIX9AqaoTi25HQPZ1rxB43Rjw0dxNZzlwC5LAs4LQUD mCRHZQcDaKCWmDC+bCy3g5sfETvblJfKiBF61mEOo0nTnPwyOalEciwG0bBcyrnu Bupt4OsM71s/KSK5IUA0jv6vVUy4fLL/5IfAz63XAdZD/ZMQq+hlPiB0e+8QmNDP o7rKWut+BEgqHrgtur7SNPzUIWCj7OVIZUO+7+dEMLKkIUlRQJKYudm3JUbF1M/c 9pc6DyR2pxjvbW+0pIAln+nawSt3OvCIEnwCewJuX0R/Pie09hRp/sh2xfItDcHj mYcpCz75VnMeV4tMm2JXn9HXQOqkAx/LPYtBh8ZNui6G+O3NRyTSOv4ouiT12e5r UfBBYb2KtK6VViAy83150q+qkws8nPykpeRkBukYZELtGQjpiMBwlaVTq809GShi 65tXPtffy4k= =OXZI -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . 7) - noarch, 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. Bug Fix(es): * kernel-rt: update to the latest RHEL7.9.z4 source tree (BZ#1917909) 4. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64 3. Bug Fix(es): * [Hyper-V][RHEL-8] Request to included a commit that adds a timeout to vmbus_wait_for_unload (BZ#1913530) * [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap (BZ#1929908) * rpmbuild cannot build the userspace RPMs in the kernel package when the kernel itself is not built (BZ#1929912) 4. 7.6) - ppc64, ppc64le, x86_64 3. Bug Fix(es): * Security patch for CVE-2020-25212 breaks directory listings via 'ls' on NFS V4.2 shares mounted with selinux enabled labels (BZ#1919144) * Enable CI and changelog for GitLab workflow (BZ#1930931) Enhancement(s): * [Cavium 7.7 Feat] qla2xxx: Update to latest upstream. (BZ#1918534) 4. ========================================================================== Ubuntu Security Notice USN-4752-1 February 25, 2021 linux-oem-5.6 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-oem-5.6: Linux kernel for OEM systems Details: Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered that legacy pairing and secure-connections pairing authentication in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. A physically proximate attacker could use this to impersonate a previously paired Bluetooth device. (CVE-2020-10135) Jay Shin discovered that the ext4 file system implementation in the Linux kernel did not properly handle directory access with broken indexing, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-14314) It was discovered that the block layer implementation in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-15436) It was discovered that the serial port driver in the Linux kernel did not properly initialize a pointer in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2020-15437) Andy Nguyen discovered that the Bluetooth HCI event packet parser in the Linux kernel did not properly handle event advertisements of certain sizes, leading to a heap-based buffer overflow. A physically proximate remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-24490) It was discovered that the NFS client implementation in the Linux kernel did not properly perform bounds checking before copying security labels in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25212) It was discovered that the Rados block device (rbd) driver in the Linux kernel did not properly perform privilege checks for access to rbd devices in some situations. A local attacker could use this to map or unmap rbd block devices. A local attacker could use this to cause a denial of service. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. A privileged attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2020-25704) It was discovered that the KVM hypervisor in the Linux kernel did not properly handle interrupts in certain situations. A local attacker in a guest VM could possibly use this to cause a denial of service (host system crash). A local attacker could use this to possibly cause a denial of service (system crash). A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-28588) It was discovered that the framebuffer implementation in the Linux kernel did not properly perform range checks in certain situations. A local attacker could use this to expose sensitive information (kernel memory). A local attacker could use this to gain unintended write access to read-only memory pages. (CVE-2020-29368) Jann Horn discovered that the mmap implementation in the Linux kernel contained a race condition when handling munmap() operations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-29369) Jann Horn discovered that the romfs file system in the Linux kernel did not properly validate file system meta-data, leading to an out-of-bounds read. An attacker could use this to construct a malicious romfs image that, when mounted, exposed sensitive information (kernel memory). A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-29661) It was discovered that a race condition existed that caused the Linux kernel to not properly restrict exit signal delivery. A local attacker could possibly use this to send signals to arbitrary processes. (CVE-2020-35508) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.6.0-1048-oem 5.6.0-1048.52 linux-image-oem-20.04 5.6.0.1048.44 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://usn.ubuntu.com/4752-1 CVE-2020-10135, CVE-2020-14314, CVE-2020-15436, CVE-2020-15437, CVE-2020-24490, CVE-2020-25212, CVE-2020-25284, CVE-2020-25641, CVE-2020-25643, CVE-2020-25704, CVE-2020-27152, CVE-2020-27815, CVE-2020-28588, CVE-2020-28915, CVE-2020-29368, CVE-2020-29369, CVE-2020-29371, CVE-2020-29660, CVE-2020-29661, CVE-2020-35508 Package Information: https://launchpad.net/ubuntu/+source/linux-oem-5.6/5.6.0-1048.52

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

resource management error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-08-17T21:26:13.437000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE