High [CVE-2026-63884] Fix potential UAF in TTM object purge
This high-severity Red Hat Linux advisory covers CVE-2026-63884 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in TTM object purge TLDR: The bo->ttm object might be changed by calling ttm_bo_validate(), move casting it to an i915_tt object later to actually get the right pointer.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
- kernel-0:6.12.0-211.49.1.el10_2
- kernel-rt-0:4.18.0-553.156.1.rt7.497.el8_10
- kernel-0:4.18.0-553.156.1.el8_10
- kernel-0:5.14.0-687.41.1.el9_8
- RHSA-2026:57251
- RHSA-2026:55765
- RHSA-2026:55764
- RHSA-2026:57252
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
Mitigation
Upgrade to a fixed release: kernel-0:6.12.0-211.49.1.el10_2, kernel-rt-0:4.18.0-553.156.1.rt7.497.el8_10, kernel-0:4.18.0-553.156.1.el8_10, kernel-0:5.14.0-687.41.1.el9_8, RHSA-2026:57251, RHSA-2026:55765. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
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