- Issued:
- 2026-06-22
- Updated:
- 2026-06-22
RHSA-2026:27729 - Critical: kernel security, bug fix, and enhancement update
Synopsis
Critical: kernel security, bug fix, and enhancement update
Type/Severity
Security Advisory Critical
Topic
An update for kernel 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 Critical. 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: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243)
-
kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (CVE-2026-43037)
-
kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)
-
kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)
-
kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)
-
kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions (CVE-2026-46243)
Bug Fix(es) and Enhancement(s):
- RHEL-124698 missed the last line of the backport (JIRA:RHEL-168608)
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
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) | 7 | s390x |
Updated Packages
- perf-debuginfo-3.10.0-1160.153.1.el7.ppc64.rpm
- bpftool-debuginfo-3.10.0-1160.153.1.el7.x86_64.rpm
- perf-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-debuginfo-common-ppc64le-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-devel-3.10.0-1160.153.1.el7.ppc64.rpm
- perf-debuginfo-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-debuginfo-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-debug-debuginfo-3.10.0-1160.153.1.el7.ppc64.rpm
- perf-debuginfo-3.10.0-1160.153.1.el7.ppc64le.rpm
- perf-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-debuginfo-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-abi-whitelists-3.10.0-1160.153.1.el7.noarch.rpm
- kernel-tools-libs-devel-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-debuginfo-common-s390x-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-tools-libs-3.10.0-1160.153.1.el7.ppc64le.rpm
- perf-debuginfo-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-debug-3.10.0-1160.153.1.el7.s390x.rpm
- python-perf-debuginfo-3.10.0-1160.153.1.el7.s390x.rpm
- perf-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-doc-3.10.0-1160.153.1.el7.noarch.rpm
- kernel-debug-devel-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-debug-debuginfo-3.10.0-1160.153.1.el7.x86_64.rpm
- bpftool-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-headers-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-tools-debuginfo-3.10.0-1160.153.1.el7.x86_64.rpm
- python-perf-3.10.0-1160.153.1.el7.ppc64le.rpm
- python-perf-debuginfo-3.10.0-1160.153.1.el7.ppc64le.rpm
- bpftool-3.10.0-1160.153.1.el7.x86_64.rpm
- bpftool-debuginfo-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-3.10.0-1160.153.1.el7.src.rpm
- kernel-tools-debuginfo-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-tools-3.10.0-1160.153.1.el7.x86_64.rpm
- python-perf-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-debug-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-tools-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-debug-devel-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-kdump-debuginfo-3.10.0-1160.153.1.el7.s390x.rpm
- python-perf-debuginfo-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-debug-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-debug-devel-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-headers-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-bootwrapper-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-debug-debuginfo-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-debug-debuginfo-3.10.0-1160.153.1.el7.ppc64le.rpm
- python-perf-debuginfo-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-debug-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-tools-3.10.0-1160.153.1.el7.ppc64.rpm
- python-perf-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-devel-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-debuginfo-common-x86_64-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-debuginfo-common-ppc64-3.10.0-1160.153.1.el7.ppc64.rpm
- python-perf-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-tools-libs-3.10.0-1160.153.1.el7.ppc64.rpm
- bpftool-debuginfo-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-debuginfo-3.10.0-1160.153.1.el7.ppc64le.rpm
- bpftool-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-tools-libs-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-tools-debuginfo-3.10.0-1160.153.1.el7.ppc64le.rpm
- perf-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-debug-devel-3.10.0-1160.153.1.el7.ppc64.rpm
- kernel-kdump-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-debuginfo-3.10.0-1160.153.1.el7.s390x.rpm
- bpftool-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-headers-3.10.0-1160.153.1.el7.ppc64.rpm
- bpftool-debuginfo-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-headers-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-kdump-devel-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-tools-libs-devel-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-bootwrapper-3.10.0-1160.153.1.el7.ppc64le.rpm
- kernel-devel-3.10.0-1160.153.1.el7.x86_64.rpm
- kernel-devel-3.10.0-1160.153.1.el7.s390x.rpm
- kernel-tools-libs-devel-3.10.0-1160.153.1.el7.ppc64le.rpm
Fixes
- This content is not included.BZ - 2448594
- This content is not included.BZ - 2464351
- This content is not included.BZ - 2467014
- This content is not included.BZ - 2467064
- This content is not included.BZ - 2467210
- This content is not included.BZ - 2481486
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at Security Contacts and Procedures.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.