ALSA-2026:81552
Important: kernel security update
Published Oct 12, 2026 · corrected/updated Oct 15, 2026 · evidence confidence medium
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise (CVE-2026-46309) * kernel: macsec: fix replay protection at XPN lower-PN wrap (CVE-2026-63925) * kernel: bpf: Support for hardening against JIT spraying (CVE-2026-64508) * kernel: x86/bugs: Enable IBPB flush on BPF JIT allocation (CVE-2026-64507) * kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236) * kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278) * kernel: drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() (CVE-2026-68245) * kernel: openvswitch: fix GSO userspace truncation underflow (CVE-2026-68123) * kernel: cifs: validate DFS referral string offsets (CVE-2026-72318) * kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887) * kernel: nvmet-auth: Synchronize timeout work during SQ teardown (CVE-2026-89970) * kernel: drm/amdkfd: Add TLB flush after MES queue eviction/suspension (CVE-2026-89811) * kernel: media: cx231xx: reject geometry changes while the VBI queue is busy (CVE-2026-89894) 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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
ALSA-2026:81552 is a unknown public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: kernel (0 → 5.14.0-687.57.1.el9_8); kernel-64k (0 → 5.14.0-687.57.1.el9_8); kernel-64k-core (0 → 5.14.0-687.57.1.el9_8); kernel-64k-debug (0 → 5.14.0-687.57.1.el9_8). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: no CVSS/EPSS yet. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 12, 2026 · OSV.dev
Detected
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise (CVE-2026-46309) * kernel: macsec: fix replay protection at XPN lower-PN wrap (CVE-2026-63925) * kernel: bpf: Support for hardening against JIT spraying (CVE-2026-64508) * kernel: x86/bugs: Enable IBPB flush on BPF
Oct 15, 2026 · OSV.dev
Fix available
kernel fixed in 5.14.0-687.57.1.el9_8; kernel-64k fixed in 5.14.0-687.57.1.el9_8; kernel-64k-core fixed in 5.14.0-687.57.1.el9_8; kernel-64k-debug fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-core fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-debug fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-debug-core fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-debug-modules fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-debug-modules-core fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-debug-modules-extra fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-modules fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-modules-core fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-64k-modules-extra fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Fix available
kernel-abi-stablelists fixed in 5.14.0-687.57.1.el9_8
Oct 15, 2026 · OSV.dev
Updated
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise (CVE-2026-46309) * kernel: macsec: fix replay protection at XPN lower-PN wrap (CVE-2026-63925) * kernel: bpf: Support for hardening against JIT spraying (CVE-2026-64508) * kernel: x86/bugs: Enable IBPB flush on BPF
Affected
- AlmaLinux:9 kernel0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-core0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-debug0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-debug-core0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-debug-modules0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-debug-modules-core0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-debug-modules-extra0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-modules0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-modules-core0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-64k-modules-extra0 → 5.14.0-687.57.1.el9_8
- AlmaLinux:9 kernel-abi-stablelists0 → 5.14.0-687.57.1.el9_8