Summary
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: cxl/port: Fix use after free of parent_port in cxl_detach_ep() (CVE-2026-31530)
* kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation (CVE-2025-54518)
* kernel: mm/slab: do not limit zeroing to orig_size when only red zoning is enabled (CVE-2026-64368)
* kernel: net: openvswitch: reject oversized nested action attrs (CVE-2026-64531)
Bug Fix(es) and Enhancement(s):
* Kernel oops after increasing max number of mac addresses of a mlx5 VF [almalinux-9.8.z] (JIRA:AlmaLinux-213036)
* AlmaLinux9.4 - s390/pkey: Check length in pkey_pckmo handler implementation [almalinux-9.8.z] (JIRA:AlmaLinux-215578)
* AlmaLinux9.4 - s390/pkey: Check length in PKEY_VERIFYPROTK ioctl [almalinux-9.8.z] (JIRA:AlmaLinux-215580)
* cifs: periodic IO errors when rename races with lease break (JIRA:AlmaLinux-192999)
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.
Fixed packages 74
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | kernel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug-devel-matched | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-debug-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-devel-matched | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-64k-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-abi-stablelists | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-cross-headers | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-devel-matched | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-debug-uki-virt | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-devel-matched | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-doc | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-headers | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-debug | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-debug-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-debug-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-debug-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-debug-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-debug-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-64k-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-debug | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-debug-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-debug-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-debug-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-debug-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-debug-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-rt-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-tools | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-tools-libs | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-tools-libs-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-uki-virt | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-uki-virt-addons | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump-devel | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump-devel-matched | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump-modules | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump-modules-core | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | kernel-zfcpdump-modules-extra | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | libperf | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | perf | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | python3-perf | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | rtla | 5.14.0-687.38.1.el9_8 |
| AlmaLinux · 9 | rv | 5.14.0-687.38.1.el9_8 |
Vulnerabilities 4
-
High 8.1
mm/slab: do not limit zeroing to orig_size when only red zoning is enabled
In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing to orig_size when only red zoning is enabled When init (zeroing) on allocation is requested, for kmalloc() we generally have to zero the full object size even if…
-
High 7.8CVE-2026-64531 Public exploit
net: openvswitch: reject oversized nested action attrs
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nla_len field is u16. Commit a1e64addf3ff ("net: openvswitch: remove misbeh…
-
High 7.3
Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker t…
-
Unscored —
cxl/port: Fix use after free of parent_port in cxl_detach_ep()
In the Linux kernel, the following vulnerability has been resolved: cxl/port: Fix use after free of parent_port in cxl_detach_ep() cxl_detach_ep() is called during bottom-up removal when all CXL memory devices beneath a switch port have been removed. For each…
References
-
report
https://access.redhat.com/security/cve/CVE-2025-54518
-
report
https://access.redhat.com/security/cve/CVE-2026-31530
-
report
https://access.redhat.com/security/cve/CVE-2026-64368
-
report
https://access.redhat.com/security/cve/CVE-2026-64531
-
report
https://bugzilla.redhat.com/2460644
-
report
https://bugzilla.redhat.com/2477784
-
report
https://bugzilla.redhat.com/2507213
-
report
https://bugzilla.redhat.com/2507402
-
advisory
https://errata.almalinux.org/9/ALSA-2026-53329.html