Описание
Important: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
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kernel: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise (CVE-2026-46309)
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kernel: macsec: fix replay protection at XPN lower-PN wrap (CVE-2026-63925)
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kernel: bpf: Support for hardening against JIT spraying (CVE-2026-64508)
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kernel: x86/bugs: Enable IBPB flush on BPF JIT allocation (CVE-2026-64507)
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kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236)
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kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278)
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kernel: drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() (CVE-2026-68245)
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kernel: openvswitch: fix GSO userspace truncation underflow (CVE-2026-68123)
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kernel: cifs: validate DFS referral string offsets (CVE-2026-72318)
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kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887)
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kernel: nvmet-auth: Synchronize timeout work during SQ teardown (CVE-2026-89970)
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kernel: drm/amdkfd: Add TLB flush after MES queue eviction/suspension (CVE-2026-89811)
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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.
Затронутые продукты
Rocky Linux 9
Ссылки на источники
Исправления
- Red Hat - 2486468
- Red Hat - 2502397
- Red Hat - 2507153
- Red Hat - 2507218
- Red Hat - 2513148
- Red Hat - 2513287
- Red Hat - 2513430
- Red Hat - 2513451
- Red Hat - 2516396
- Red Hat - 2528788
- Red Hat - 2535265
- Red Hat - 2535309
- Red Hat - 2535338
Связанные уязвимости
ELSA-2026-81406: kernel security, bug fix, and enhancement update (IMPORTANT)
In the Linux kernel, the following vulnerability has been resolved: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise Add validation in xe_vm_madvise_ioctl() to reject PAT indices with XE_COH_NONE coherency mode when applied to CPU cached memory. Using coh_none with CPU cached buffers is a security issue. When the kernel clears pages before reallocation, the clear operation stays in CPU cache (dirty). GPU with coh_none can bypass CPU caches and read stale sensitive data directly from DRAM, potentially leaking data from previously freed pages of other processes. This aligns with the existing validation in vm_bind path (xe_vm_bind_ioctl_validate_bo). v2(Matthew brost) - Add fixes - Move one debug print to better place v3(Matthew Auld) - Should be drm/xe/uapi - More Cc v4(Shuicheng Lin) - Fix kmem leak issues by the way v5 - Remove kmem leak because it has been merged by another patch v6 - Remove the fix which is not related to current fix v7 - No change v8 - Reba...
In the Linux kernel, the following vulnerability has been resolved: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise Add validation in xe_vm_madvise_ioctl() to reject PAT indices with XE_COH_NONE coherency mode when applied to CPU cached memory. Using coh_none with CPU cached buffers is a security issue. When the kernel clears pages before reallocation, the clear operation stays in CPU cache (dirty). GPU with coh_none can bypass CPU caches and read stale sensitive data directly from DRAM, potentially leaking data from previously freed pages of other processes. This aligns with the existing validation in vm_bind path (xe_vm_bind_ioctl_validate_bo). v2(Matthew brost) - Add fixes - Move one debug print to better place v3(Matthew Auld) - Should be drm/xe/uapi - More Cc v4(Shuicheng Lin) - Fix kmem leak issues by the way v5 - Remove kmem leak because it has been merged by another patch v6 - Remove the fix which is not related to current fix v7 - No change v8 - Reba...