CVE-2026-72311
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: free madvise VMA array on L2 flush failure
xe_vm_madvise_ioctl() allocates madvise_range.vmas in get_vmas(). After get_vmas() succeeds with at least one VMA, error paths must go through free_vmas so the array is released before the madvise details are destroyed.
The L2 flush validation path added for PAT madvise rejects some SVM/userptr ranges after get_vmas() has succeeded, but jumps directly to madv_fini. This skips kfree(madvise_range.vmas), leaking the VMA array on each failed ioctl.
Jump to free_vmas instead, matching the other validation failure paths after get_vmas() has succeeded.
(cherry picked from commit c3a1c3579b1250060da73507a4acef712974c78a)
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 < bf126747e7bff55e5ba0b1ec10fc5fce99feaed9 | affected |
| Linux | Linux | 4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 < 14abbed336a2d1bbd726c25d148d2ec0ff928073 | affected |
| Linux | Linux | 7.1 | affected |
| Linux | Linux | 0 < 7.1 | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/bf126747e7bff55e5ba0b1ec10fc5fce99feaed9
- https://git.kernel.org/stable/c/14abbed336a2d1bbd726c25d148d2ec0ff928073
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