RHSA-2024:10262 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: improper input validation may lead to privilege escalation (CVE-2021-4204)
• kernel: local privileges escalation in kernel/bpf/verifier.c (CVE-2022-23222)
• kernel: Linux ebpf logic vulnerability leads to critical memory read and write gaining root privileges (CVE-2022-0500)
• kernel: x86/mm: Randomize per-cpu entry area (CVE-2023-0597)
• kernel: mm/sparsemem: fix race in accessing memory_section->usage (CVE-2023-52489)
• kernel: blk-mq: fix IO hang from sbitmap wakeup race (CVE-2024-26671)
• kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del (CVE-2024-26961)
• kernel: nvme-tcp: fix UAF when detecting digest errors (CVE-2022-48686)
• kernel: vt: fix unicode buffer corruption when deleting characters (CVE-2024-35823)
• kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs (CVE-2021-47393)
• kernel: userfaultfd: fix a race between writeprotect and exit_mmap() (CVE-2021-47461)
• kernel: scsi: mpi3mr: Avoid memcpy field-spanning write WARNING (CVE-2024-36920)
• kernel: mptcp: ensure snd_nxt is properly initialized on connect (CVE-2024-36889)
• kernel: bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE (CVE-2024-38564)
• kernel: genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline (CVE-2024-31076)
• kernel: drm/radeon: fix UBSAN warning in kv_dpm.c (CVE-2024-40988)
• kernel: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create (CVE-2022-48773)
• kernel: bpf: Fix overrunning reservations in ringbuf (CVE-2024-41009)
• kernel: xfs: add bounds checking to xlog_recover_process_data (CVE-2024-41014)
• kernel: sched/deadline: Fix task_struct reference leak (CVE-2024-41023)
• kernel: bpf: Fix crash due to out of bounds access into reg2btf_ids. (CVE-2022-48929)
• kernel: mptcp: pm: Fix uaf in __timer_delete_sync (CVE-2024-46858)

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.

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.

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.8 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 8.8 aarch64

Fixes

• BZ - 2039178 - CVE-2021-4204 kernel: improper input validation may lead to privilege escalation
• BZ - 2043520 - CVE-2022-23222 kernel: local privileges escalation in kernel/bpf/verifier.c
• BZ - 2044578 - CVE-2022-0500 kernel: Linux ebpf logic vulnerability leads to critical memory read and write gaining root privileges
• BZ - 2165926 - CVE-2023-0597 kernel: x86/mm: Randomize per-cpu entry area
• BZ - 2269189 - CVE-2023-52489 kernel: mm/sparsemem: fix race in accessing memory_section->usage
• BZ - 2272811 - CVE-2024-26671 kernel: blk-mq: fix IO hang from sbitmap wakeup race
• BZ - 2278176 - CVE-2024-26961 kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del
• BZ - 2278931 - CVE-2022-48686 kernel: nvme-tcp: fix UAF when detecting digest errors
• BZ - 2281190 - CVE-2024-35823 kernel: vt: fix unicode buffer corruption when deleting characters
• BZ - 2282345 - CVE-2021-47393 kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs
• BZ - 2282896 - CVE-2021-47461 kernel: userfaultfd: fix a race between writeprotect and exit_mmap()
• BZ - 2284515 - CVE-2024-36920 kernel: scsi: mpi3mr: Avoid memcpy field-spanning write WARNING
• BZ - 2284571 - CVE-2024-36889 kernel: mptcp: ensure snd_nxt is properly initialized on connect
• BZ - 2293429 - CVE-2024-38564 kernel: bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE
• BZ - 2293684 - CVE-2024-31076 kernel: genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline
• BZ - 2297572 - CVE-2024-40988 kernel: drm/radeon: fix UBSAN warning in kv_dpm.c
• BZ - 2298109 - CVE-2022-48773 kernel: xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create
• BZ - 2298412 - CVE-2024-41009 kernel: bpf: Fix overrunning reservations in ringbuf
• BZ - 2300297 - CVE-2024-41014 kernel: xfs: add bounds checking to xlog_recover_process_data
• BZ - 2300381 - CVE-2024-41023 kernel: sched/deadline: Fix task_struct reference leak
• BZ - 2315210 - CVE-2024-46858 kernel: mptcp: pm: Fix uaf in __timer_delete_sync

CVEs

• CVE-2021-4204
• CVE-2021-47393
• CVE-2021-47461
• CVE-2022-0500
• CVE-2022-23222
• CVE-2022-48686
• CVE-2022-48773
• CVE-2022-48929
• CVE-2023-0597
• CVE-2023-52489
• CVE-2024-26671
• CVE-2024-26961
• CVE-2024-31076
• CVE-2024-35823
• CVE-2024-36889
• CVE-2024-36920
• CVE-2024-38564
• CVE-2024-40988
• CVE-2024-41009
• CVE-2024-41014
• CVE-2024-41023
• CVE-2024-46858

References

• https://access.redhat.com/security/updates/classification/#moderate