ghsa-q5hm-2p5x-hm8x
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
During the detaching of Marvell's SAS/SATA controller, the original code calls cancel_delayed_work() in mvs_free() to cancel the delayed work item mwq->work_q. However, if mwq->work_q is already running, the cancel_delayed_work() may fail to cancel it. This can lead to use-after-free scenarios where mvs_free() frees the mvs_info while mvs_work_queue() is still executing and attempts to access the already-freed mvs_info.
A typical race condition is illustrated below:
CPU 0 (remove) | CPU 1 (delayed work callback) mvs_pci_remove() | mvs_free() | mvs_work_queue() cancel_delayed_work() | kfree(mvi) | | mvi-> // UAF
Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the delayed work item is properly canceled and any executing delayed work item completes before the mvs_info is deallocated.
This bug was found by static analysis.
{
"affected": [],
"aliases": [
"CVE-2025-40001"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-18T08:15:34Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mvsas: Fix use-after-free bugs in mvs_work_queue\n\nDuring the detaching of Marvell\u0027s SAS/SATA controller, the original code\ncalls cancel_delayed_work() in mvs_free() to cancel the delayed work\nitem mwq-\u003ework_q. However, if mwq-\u003ework_q is already running, the\ncancel_delayed_work() may fail to cancel it. This can lead to\nuse-after-free scenarios where mvs_free() frees the mvs_info while\nmvs_work_queue() is still executing and attempts to access the\nalready-freed mvs_info.\n\nA typical race condition is illustrated below:\n\nCPU 0 (remove) | CPU 1 (delayed work callback)\nmvs_pci_remove() |\n mvs_free() | mvs_work_queue()\n cancel_delayed_work() |\n kfree(mvi) |\n | mvi-\u003e // UAF\n\nReplace cancel_delayed_work() with cancel_delayed_work_sync() to ensure\nthat the delayed work item is properly canceled and any executing\ndelayed work item completes before the mvs_info is deallocated.\n\nThis bug was found by static analysis.",
"id": "GHSA-q5hm-2p5x-hm8x",
"modified": "2025-10-29T15:31:52Z",
"published": "2025-10-18T09:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40001"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/00d3af40b158ebf7c7db2b3bbb1598a54bf28127"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3c90f583d679c81a5a607a6ae0051251b6dee35b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/60cd16a3b7439ccb699d0bf533799eeb894fd217"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6ba7e73cafd155a5d3abf560d315f0bab2b9d89f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a6f68f219d4d4b92d7c781708d4afc4cc42961ec"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aacd1777d4a795c387a20b9ca776e2c1225d05d7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c2c35cb2a31844f84f21ab364b38b4309d756d42"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/feb946d2fc9dc754bf3d594d42cd228860ff8647"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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