RHSA-2026:10756 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle 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: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution (CVE-2025-38024)
• kernel: iavf: Fix reset error handling (CVE-2022-50053)
• kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180)
• kernel: RDMA/rxe: Fix incomplete state save in rxe_requester (CVE-2023-53539)
• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)
• kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)
• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CVE-2026-23216)
• kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231)
• kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238)

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 - Extended Life Cycle Support 7 x86_64

Fixes

• BZ - 2373354 - CVE-2025-38024 kernel: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution
• BZ - 2373553 - CVE-2022-50053 kernel: iavf: Fix reset error handling
• BZ - 2376376 - CVE-2025-38180 kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem
• BZ - 2401510 - CVE-2023-53539 kernel: RDMA/rxe: Fix incomplete state save in rxe_requester
• BZ - 2439887 - CVE-2026-23193 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
• BZ - 2439931 - CVE-2026-23204 kernel: net/sched: cls_u32: use skb_header_pointer_careful()
• BZ - 2440630 - CVE-2026-23216 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()
• BZ - 2444376 - CVE-2026-23231 kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain()
• BZ - 2444398 - CVE-2025-71238 kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation.

CVEs

• CVE-2022-50053
• CVE-2023-53539
• CVE-2025-38024
• CVE-2025-38180
• CVE-2025-71238
• CVE-2026-23193
• CVE-2026-23204
• CVE-2026-23216
• CVE-2026-23231

References

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