RHSA-2024:8614 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: ovl: fix use after free in struct ovl_aio_req (CVE-2023-1252)
• hw: cpu: intel: Native Branch History Injection (BHI) (CVE-2024-2201)
• 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: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats (CVE-2024-26686)
• kernel: mptcp: fix data re-injection from stale subflow (CVE-2024-26826)
• kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del (CVE-2024-26961)
• kernel: hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field (CVE-2021-47384)
• kernel: mptcp: ensure snd_nxt is properly initialized on connect (CVE-2024-36889)
• kernel: ipv6: prevent possible NULL dereference in rt6_probe() (CVE-2024-40960)
• kernel: ext4: fix uninitialized ratelimit_state->lock access in __ext4_fill_super() (CVE-2024-40998)
• kernel: filelock: fix potential use-after-free in posix_lock_inode (CVE-2024-41049)
• kernel: mm: prevent derefencing NULL ptr in pfn_section_valid() (CVE-2024-41055)
• kernel: nvmet: fix a possible leak when destroy a ctrl during qp establishment (CVE-2024-42152)

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 Real Time for x86_64 - 4 years of updates 9.2 x86_64
• Red Hat Enterprise Linux for Real Time for NFV for x86_64 - 4 years of updates 9.2 x86_64

Fixes

• BZ - 2176140 - CVE-2023-1252 kernel: ovl: fix use after free in struct ovl_aio_req
• BZ - 2268118 - CVE-2024-2201 hw: cpu: intel: Native Branch History Injection (BHI)
• 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 - 2273109 - CVE-2024-26686 kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
• BZ - 2275604 - CVE-2024-26826 kernel: mptcp: fix data re-injection from stale subflow
• BZ - 2278176 - CVE-2024-26961 kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del
• BZ - 2282356 - CVE-2021-47384 kernel: hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field
• BZ - 2284571 - CVE-2024-36889 kernel: mptcp: ensure snd_nxt is properly initialized on connect
• BZ - 2297544 - CVE-2024-40960 kernel: ipv6: prevent possible NULL dereference in rt6_probe()
• BZ - 2297582 - CVE-2024-40998 kernel: ext4: fix uninitialized ratelimit_state->lock access in __ext4_fill_super()
• BZ - 2300422 - CVE-2024-41049 kernel: filelock: fix potential use-after-free in posix_lock_inode
• BZ - 2300429 - CVE-2024-41055 kernel: mm: prevent derefencing NULL ptr in pfn_section_valid()
• BZ - 2301519 - CVE-2024-42152 kernel: nvmet: fix a possible leak when destroy a ctrl during qp establishment

CVEs

• CVE-2021-47384
• CVE-2023-1252
• CVE-2023-52489
• CVE-2024-2201
• CVE-2024-26671
• CVE-2024-26686
• CVE-2024-26826
• CVE-2024-26961
• CVE-2024-36889
• CVE-2024-40960
• CVE-2024-40998
• CVE-2024-41049
• CVE-2024-41055
• CVE-2024-42152

References

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