GHSA-J5VG-4JFW-25G2
Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-30 03:37In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: avoid double drm_exec_fini() in userq validate
When new_addition is true, amdgpu_userq_vm_validate() calls drm_exec_fini(&exec) before iterating over the collected HMM ranges and calling amdgpu_ttm_tt_get_user_pages().
If amdgpu_ttm_tt_get_user_pages() fails in that path, the code jumps to unlock_all and calls drm_exec_fini(&exec) a second time on the same exec object. drm_exec_fini() is not idempotent: it frees exec->objects and may also drop exec->contended and finalize the ww acquire context.
Route that error path directly to the range cleanup once exec has already been finalized.
Issue found using a prototype static analysis tool and confirmed by code review.
(cherry picked from commit 2802952e4a07306da6ebe813ff1acacc5691851a)
{
"affected": [],
"aliases": [
"CVE-2026-52987"
],
"database_specific": {
"cwe_ids": [
"CWE-1341"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-24T17:17:09Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: avoid double drm_exec_fini() in userq validate\n\nWhen new_addition is true, amdgpu_userq_vm_validate() calls\ndrm_exec_fini(\u0026exec) before iterating over the collected HMM ranges and\ncalling amdgpu_ttm_tt_get_user_pages().\n\nIf amdgpu_ttm_tt_get_user_pages() fails in that path, the code jumps to\nunlock_all and calls drm_exec_fini(\u0026exec) a second time on the same\nexec object. drm_exec_fini() is not idempotent: it frees exec-\u003eobjects\nand may also drop exec-\u003econtended and finalize the ww acquire context.\n\nRoute that error path directly to the range cleanup once exec has\nalready been finalized.\n\nIssue found using a prototype static analysis tool\nand confirmed by code review.\n\n(cherry picked from commit 2802952e4a07306da6ebe813ff1acacc5691851a)",
"id": "GHSA-j5vg-4jfw-25g2",
"modified": "2026-06-30T03:37:12Z",
"published": "2026-06-24T18:32:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52987"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-52987"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492365"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/508babf310365f1107a2e8831c267c292a286818"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c7c3ae7c01e5a0742b93cb9b40800bdd7f811e38"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52987.json"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- 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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.