RHSA-2025:11810 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.4 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.

Description

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

Security Fix(es):

• kernel: drm/amd/display: Implement bounds check for stream encoder creation in DCN301 (CVE-2024-26660)
• kernel: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc (CVE-2021-47185)
• kernel: nbd: null check for nla_nest_start (CVE-2024-27025)
• kernel: perf/core: Bail out early if the request AUX area is out of bound (CVE-2023-52835)
• kernel: firmware: cs_dsp: Fix overflow checking of wmfw header (CVE-2024-41039)
• kernel: powerpc/pseries: Whitelist dtl slub object for copying to userspace (CVE-2024-41065)
• kernel: usb: xhci: prevent potential failure in handle_tx_event() for Transfer events without TRB (CVE-2024-42226)
• kernel: blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race (CVE-2024-50082)
• kernel: parport: Proper fix for array out-of-bounds access (CVE-2024-50074)
• kernel: ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up (CVE-2025-21887)
• kernel: wifi: iwlwifi: limit printed string from FW file (CVE-2025-21905)
• kernel: ext4: avoid journaling sb update on error if journal is destroying (CVE-2025-22113)
• kernel: ibmvnic: Use kernel helpers for hex dumps (CVE-2025-22104)
• kernel: udmabuf: fix a buf size overflow issue during udmabuf creation (CVE-2025-37803)
• kernel: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error (CVE-2025-38089)
• kernel: net/sched: fix use-after-free in taprio_dev_notifier (CVE-2025-38087)

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 9.4 x86_64
• Red Hat Enterprise Linux Server - AUS 9.4 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.4 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.4 ppc64le
• Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.4 s390x
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.4 aarch64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x

Fixes

• BZ - 2272782 - CVE-2024-26660 kernel: drm/amd/display: Implement bounds check for stream encoder creation in DCN301
• BZ - 2274624 - CVE-2021-47185 kernel: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc
• BZ - 2278484 - CVE-2024-27025 kernel: nbd: null check for nla_nest_start
• BZ - 2282735 - CVE-2023-52835 kernel: perf/core: Bail out early if the request AUX area is out of bound
• BZ - 2300408 - CVE-2024-41039 kernel: firmware: cs_dsp: Fix overflow checking of wmfw header
• BZ - 2300440 - CVE-2024-41065 kernel: powerpc/pseries: Whitelist dtl slub object for copying to userspace
• BZ - 2301544 - CVE-2024-42226 kernel: usb: xhci: prevent potential failure in handle_tx_event() for Transfer events without TRB
• BZ - 2322308 - CVE-2024-50082 kernel: blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race
• BZ - 2322310 - CVE-2024-50074 kernel: parport: Proper fix for array out-of-bounds access
• BZ - 2355405 - CVE-2025-21887 kernel: ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up
• BZ - 2356613 - CVE-2025-21905 kernel: wifi: iwlwifi: limit printed string from FW file
• BZ - 2360212 - CVE-2025-22113 kernel: ext4: avoid journaling sb update on error if journal is destroying
• BZ - 2360265 - CVE-2025-22104 kernel: ibmvnic: Use kernel helpers for hex dumps
• BZ - 2365013 - CVE-2025-37803 kernel: udmabuf: fix a buf size overflow issue during udmabuf creation
• BZ - 2375529 - CVE-2025-38089 kernel: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error
• BZ - 2375531 - CVE-2025-38087 kernel: net/sched: fix use-after-free in taprio_dev_notifier

CVEs

• CVE-2021-47185
• CVE-2023-52835
• CVE-2023-53558
• CVE-2024-26660
• CVE-2024-27025
• CVE-2024-41039
• CVE-2024-41065
• CVE-2024-42226
• CVE-2024-50074
• CVE-2024-50082
• CVE-2025-21887
• CVE-2025-21905
• CVE-2025-22104
• CVE-2025-22113
• CVE-2025-37803
• CVE-2025-38087
• CVE-2025-38089

References

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