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CVE-2026-72311 (GCVE-0-2026-72311)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:12
VLAI
Title
drm/xe: free madvise VMA array on L2 flush failure
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)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 , < bf126747e7bff55e5ba0b1ec10fc5fce99feaed9 (git)
Affected: 4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 , < 14abbed336a2d1bbd726c25d148d2ec0ff928073 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_vm_madvise.c"
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: free madvise VMA array on L2 flush failure\n\nxe_vm_madvise_ioctl() allocates madvise_range.vmas in get_vmas().\nAfter get_vmas() succeeds with at least one VMA, error paths must go\nthrough free_vmas so the array is released before the madvise details are\ndestroyed.\n\nThe L2 flush validation path added for PAT madvise rejects some\nSVM/userptr ranges after get_vmas() has succeeded, but jumps directly to\nmadv_fini. This skips kfree(madvise_range.vmas), leaking the VMA array on\neach failed ioctl.\n\nJump to free_vmas instead, matching the other validation failure paths\nafter get_vmas() has succeeded.\n\n(cherry picked from commit c3a1c3579b1250060da73507a4acef712974c78a)"
        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:12:16.211Z",
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    "cveId": "CVE-2026-72311",
    "datePublished": "2026-08-15T05:55:27.164Z",
    "dateReserved": "2026-08-09T03:40:39.918Z",
    "dateUpdated": "2026-08-17T05:12:16.211Z",
    "state": "PUBLISHED"
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      "title": "kernel: drm/xe: free madvise VMA array on L2 flush failure",
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      "cve": "CVE-2026-72311",
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    }
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}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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