Home / mailings [RHSA-2023:4789-01] Important: kernel security, bug fix, and enhancement update
Posted on 29 August 2023
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2023:4789-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4789
Issue date: 2023-08-29
CVE Names: CVE-2021-33656 CVE-2022-42896 CVE-2023-1637
CVE-2023-1829 CVE-2023-2002 CVE-2023-2124
CVE-2023-3390 CVE-2023-20593 CVE-2023-28466
CVE-2023-35788
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 8.6
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.8.6) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS EUS (v.8.6) - aarch64, noarch, ppc64le, s390x, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in
net/bluetooth/l2cap_core.c (CVE-2022-42896)
* kernel: Use-after-free vulnerability in the Linux Kernel traffic control
index filter (CVE-2023-1829)
* kernel: UAF in nftables when nft_set_lookup_global triggered after
handling named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
(CVE-2023-35788)
* kernel: when setting font with malicious data by ioctl PIO_FONT, kernel
will write memory out of bounds (CVE-2021-33656)
* kernel: save/restore speculative MSRs during S3 suspend/resume
(CVE-2023-1637)
* Kernel: bluetooth: Unauthorized management command execution
(CVE-2023-2002)
* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)
* hw: amd: Cross-Process Information Leak (CVE-2023-20593)
* kernel: tls: race condition in do_tls_getsockopt may lead to
use-after-free or NULL pointer dereference (CVE-2023-28466)
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):
* Simultaneous writes to a page on xfs can result in zero-byte data
(BZ#2184103)
* Invalid character detected by rpminspect in
Documentation/translations/zh_CN/process/magic-number.rst (BZ#2208286)
* Low memory deadlock with md devices and external (imsm) metadata handling
- - requires a kernfs notification backport (BZ#2208542)
* Windows Server 2019 guest randomly pauses with "KVM: entry failed,
hardware error 0x80000021" (BZ#2211663)
* Marvell 8.7 Bug qedi shutdown handler hangs upon reboot (BZ#2215334)
* aacraid misses interrupts when a CPU is disabled resulting in scsi
timeouts and the adapter being unusable until reboot. (BZ#2216499)
* rbd: avoid fast-diff corruption in snapshot-based mirroring [8.9]
(BZ#2216770)
* OCS 4.8 cephfs kernel crash : mds_dispatch ceph_handle_snap unable to
handle kernel NULL (BZ#2218273)
* FJ8.6 Bug: System panic occurs because the list used by i40e driver is
corrupted (BZ#2219262)
* st_gmac tx-checksum offload on vlan is not consistent with st_gmac
interface (BZ#2219908)
* Regression of 3b8cc6298724 ("blk-cgroup: Optimize blkcg_rstat_flush()")
(BZ#2220811)
* refcount_t overflow often happens in mem_cgroup_id_get_online()
(BZ#2221011)
* Scheduler update (rhel8.8) (BZ#2221304)
* RHEL8.6 boot panic with message "kernel BUG at lib/list_debug.c:28!"
(BZ#2222247)
* Enable conntrack clash resolution for GRE (BZ#2223543)
* Intel 8.8 BUG SPR perf: Workaround the UPI
intel_uncore_has_discovery_tables issue on SPR MCC and LCC (BZ#2225514)
* KVM: x86: fix sending PV IPI (BZ#2226580)
* libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227074)
Enhancement(s):
* Mellanox 8.7 FEAT mlx5: It's possible to enable LRO when XDP is active
(BZ#2165585)
* Export symbol pci_find_host_bridge (BZ#2225335)
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/):
2108696 - CVE-2021-33656 kernel: when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds
2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c
2179000 - CVE-2023-28466 kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference
2181891 - CVE-2023-1637 kernel: save/restore speculative MSRs during S3 suspend/resume
2187308 - CVE-2023-2002 Kernel: bluetooth: Unauthorized management command execution
2187439 - CVE-2023-2124 kernel: OOB access in the Linux kernel's XFS subsystem
2188470 - CVE-2023-1829 kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter
2213260 - CVE-2023-3390 kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests
2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
2217845 - CVE-2023-20593 hw: amd: Cross-Process Information Leak
6. Package List:
Red Hat Enterprise Linux BaseOS EUS (v.8.6):
Source:
kernel-4.18.0-372.70.1.el8_6.src.rpm
aarch64:
bpftool-4.18.0-372.70.1.el8_6.aarch64.rpm
bpftool-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-core-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-cross-headers-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-core-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-devel-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-modules-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-modules-extra-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-devel-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-headers-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-modules-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-modules-extra-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-tools-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-tools-libs-4.18.0-372.70.1.el8_6.aarch64.rpm
perf-4.18.0-372.70.1.el8_6.aarch64.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
python3-perf-4.18.0-372.70.1.el8_6.aarch64.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
noarch:
kernel-abi-stablelists-4.18.0-372.70.1.el8_6.noarch.rpm
kernel-doc-4.18.0-372.70.1.el8_6.noarch.rpm
ppc64le:
bpftool-4.18.0-372.70.1.el8_6.ppc64le.rpm
bpftool-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-core-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-cross-headers-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-core-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-devel-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-modules-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-devel-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-headers-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-modules-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-modules-extra-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-tools-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-tools-libs-4.18.0-372.70.1.el8_6.ppc64le.rpm
perf-4.18.0-372.70.1.el8_6.ppc64le.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
python3-perf-4.18.0-372.70.1.el8_6.ppc64le.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
s390x:
bpftool-4.18.0-372.70.1.el8_6.s390x.rpm
bpftool-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-core-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-cross-headers-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debug-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debug-core-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debug-devel-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debug-modules-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debug-modules-extra-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-devel-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-headers-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-modules-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-modules-extra-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-tools-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-zfcpdump-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-zfcpdump-core-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-zfcpdump-devel-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-zfcpdump-modules-4.18.0-372.70.1.el8_6.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-372.70.1.el8_6.s390x.rpm
perf-4.18.0-372.70.1.el8_6.s390x.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
python3-perf-4.18.0-372.70.1.el8_6.s390x.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.s390x.rpm
x86_64:
bpftool-4.18.0-372.70.1.el8_6.x86_64.rpm
bpftool-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-core-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-cross-headers-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-core-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-devel-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-modules-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-modules-extra-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-devel-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-headers-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-modules-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-modules-extra-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-tools-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-tools-libs-4.18.0-372.70.1.el8_6.x86_64.rpm
perf-4.18.0-372.70.1.el8_6.x86_64.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
python3-perf-4.18.0-372.70.1.el8_6.x86_64.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
Red Hat CodeReady Linux Builder EUS (v.8.6):
aarch64:
bpftool-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
kernel-tools-libs-devel-4.18.0-372.70.1.el8_6.aarch64.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.aarch64.rpm
ppc64le:
bpftool-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-372.70.1.el8_6.ppc64le.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.ppc64le.rpm
x86_64:
bpftool-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debug-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-tools-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
kernel-tools-libs-devel-4.18.0-372.70.1.el8_6.x86_64.rpm
perf-debuginfo-4.18.0-372.70.1.el8_6.x86_64.rpm
python3-perf-debuginfo-4.18.0-372.70.1.el8_6.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-2021-33656
https://access.redhat.com/security/cve/CVE-2022-42896
https://access.redhat.com/security/cve/CVE-2023-1637
https://access.redhat.com/security/cve/CVE-2023-1829
https://access.redhat.com/security/cve/CVE-2023-2002
https://access.redhat.com/security/cve/CVE-2023-2124
https://access.redhat.com/security/cve/CVE-2023-3390
https://access.redhat.com/security/cve/CVE-2023-20593
https://access.redhat.com/security/cve/CVE-2023-28466
https://access.redhat.com/security/cve/CVE-2023-35788
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2023 Red Hat, Inc.
