RHSA-2024:6753 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

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: ext4: fix double-free of blocks due to wrong extents moved_len (CVE-2024-26704)
• kernel: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() (CVE-2024-26773)
• kernel: ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal() (CVE-2024-26772)
• kernel: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() (CVE-2024-27020)
• kernel: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get() (CVE-2024-27019)
• kernel: ipv6: sr: fix out-of-bounds read when setting HMAC data. (CVE-2022-48687)
• kernel: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get() (CVE-2024-35898)
• kernel: virtio-net: Add validation for used length (CVE-2021-47352)
• kernel: mm, thp: bail out early in collapse_file for writeback page (CVE-2021-47492)
• kernel: bpf: Fix overrunning reservations in ringbuf (CVE-2024-41009)

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 Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• BZ - 2273174 - CVE-2024-26704 kernel: ext4: fix double-free of blocks due to wrong extents moved_len
• BZ - 2273236 - CVE-2024-26773 kernel: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()
• BZ - 2273242 - CVE-2024-26772 kernel: ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal()
• BZ - 2278256 - CVE-2024-27020 kernel: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()
• BZ - 2278258 - CVE-2024-27019 kernel: netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get()
• BZ - 2278930 - CVE-2022-48687 kernel: ipv6: sr: fix out-of-bounds read when setting HMAC data.
• BZ - 2281669 - CVE-2024-35898 kernel: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get()
• BZ - 2282401 - CVE-2021-47352 kernel: virtio-net: Add validation for used length
• BZ - 2282924 - CVE-2021-47492 kernel: mm, thp: bail out early in collapse_file for writeback page
• BZ - 2298412 - CVE-2024-41009 kernel: bpf: Fix overrunning reservations in ringbuf

CVEs

• CVE-2021-47352
• CVE-2021-47492
• CVE-2022-48687
• CVE-2024-26704
• CVE-2024-26772
• CVE-2024-26773
• CVE-2024-27019
• CVE-2024-27020
• CVE-2024-35898
• CVE-2024-41009

References

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