GHSA-M6G2-MPP7-VR6R
Vulnerability from github – Published: 2026-03-25 12:30 – Updated: 2026-04-02 15:31In the Linux kernel, the following vulnerability has been resolved:
scsi: pm8001: Fix use-after-free in pm8001_queue_command()
Commit e29c47fe8946 ("scsi: pm8001: Simplify pm8001_task_exec()") refactors pm8001_queue_command(), however it introduces a potential cause of a double free scenario when it changes the function to return -ENODEV in case of phy down/device gone state.
In this path, pm8001_queue_command() updates task status and calls task_done to indicate to upper layer that the task has been handled. However, this also frees the underlying SAS task. A -ENODEV is then returned to the caller. When libsas sas_ata_qc_issue() receives this error value, it assumes the task wasn't handled/queued by LLDD and proceeds to clean up and free the task again, resulting in a double free.
Since pm8001_queue_command() handles the SAS task in this case, it should return 0 to the caller indicating that the task has been handled.
{
"affected": [],
"aliases": [
"CVE-2026-23306"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-25T11:16:26Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix use-after-free in pm8001_queue_command()\n\nCommit e29c47fe8946 (\"scsi: pm8001: Simplify pm8001_task_exec()\") refactors\npm8001_queue_command(), however it introduces a potential cause of a double\nfree scenario when it changes the function to return -ENODEV in case of phy\ndown/device gone state.\n\nIn this path, pm8001_queue_command() updates task status and calls\ntask_done to indicate to upper layer that the task has been handled.\nHowever, this also frees the underlying SAS task. A -ENODEV is then\nreturned to the caller. When libsas sas_ata_qc_issue() receives this error\nvalue, it assumes the task wasn\u0027t handled/queued by LLDD and proceeds to\nclean up and free the task again, resulting in a double free.\n\nSince pm8001_queue_command() handles the SAS task in this case, it should\nreturn 0 to the caller indicating that the task has been handled.",
"id": "GHSA-m6g2-mpp7-vr6r",
"modified": "2026-04-02T15:31:36Z",
"published": "2026-03-25T12:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23306"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47"
}
],
"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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