GHSA-XGPC-Q5WR-Q4V5
Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: fix list_del corruption in kfd_criu_resume_svm
The cleanup tail of kfd_criu_resume_svm() walks svms->criu_svm_metadata_list and kfree()s each struct criu_svm_metadata without removing it from the list. The list head is left pointing at freed kmalloc-96 objects.
A second AMDKFD_IOC_CRIU_OP from the same process re-enters: list_empty() reads the dangling ->next (use-after-free), the loop walks freed entries, and each is kfree()'d again (double-free). This is reachable by an unprivileged render-group user via /dev/kfd with no capabilities required.
Add list_del() before the kfree() so the list is properly emptied. The list_for_each_entry_safe() iterator already caches the next pointer, so unlinking during the walk is safe.
(cherry picked from commit 6322d278a298e2c1430b9d2697743d3a04b788b1)
{
"affected": [],
"aliases": [
"CVE-2026-72449"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-15T06:22:18Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix list_del corruption in kfd_criu_resume_svm\n\nThe cleanup tail of kfd_criu_resume_svm() walks\nsvms-\u003ecriu_svm_metadata_list and kfree()s each struct criu_svm_metadata\nwithout removing it from the list. The list head is left pointing at\nfreed kmalloc-96 objects.\n\nA second AMDKFD_IOC_CRIU_OP from the same process re-enters: list_empty()\nreads the dangling -\u003enext (use-after-free), the loop walks freed entries,\nand each is kfree()\u0027d again (double-free). This is reachable by an\nunprivileged render-group user via /dev/kfd with no capabilities required.\n\nAdd list_del() before the kfree() so the list is properly emptied. The\nlist_for_each_entry_safe() iterator already caches the next pointer, so\nunlinking during the walk is safe.\n\n(cherry picked from commit 6322d278a298e2c1430b9d2697743d3a04b788b1)",
"id": "GHSA-xgpc-q5wr-q4v5",
"modified": "2026-08-17T06:33:30Z",
"published": "2026-08-15T06:32:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72449"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/506e635aed05dbdeef11e3c59f6e42980cda5b6d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/838b57b3e7ce8cce0fda56d0861add3d464dd6c8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8fa5655da368d0306c03e9dc9cda8ae2a7840926"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/96ac562a9ea3020981f536384711190841c81aa8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c8a8d350a273c005a48c64c4519d21b2a51c5ceb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e33a3bd5cb8d0cf1557dee014115f812c9686130"
}
],
"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"
}
]
}
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