RHSA-2026:0532 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

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.

Description

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

Security Fix(es):

• kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)
• kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)
• kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)
• kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL (CVE-2023-53680)
• kernel: RDMA/rxe: Fix mr->map double free (CVE-2022-50543)
• kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses (CVE-2023-53675)
• kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (CVE-2023-53705)
• kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)

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 Extension 8.8 x86_64
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• 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

Fixes

• BZ - 2393172 - CVE-2025-38724 kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()
• BZ - 2395792 - CVE-2025-39825 kernel: smb: client: fix race with concurrent opens in rename(2)
• BZ - 2400795 - CVE-2023-53513 kernel: nbd: fix incomplete validation of ioctl arg
• BZ - 2402213 - CVE-2023-53680 kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL
• BZ - 2402222 - CVE-2022-50543 kernel: RDMA/rxe: Fix mr->map double free
• BZ - 2402293 - CVE-2023-53675 kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses
• BZ - 2405713 - CVE-2023-53705 kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv()
• BZ - 2422801 - CVE-2025-68285 kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

CVEs

• CVE-2022-50543
• CVE-2023-53513
• CVE-2023-53675
• CVE-2023-53680
• CVE-2023-53705
• CVE-2025-38724
• CVE-2025-39825
• CVE-2025-68285

References

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