CVE-2026-23306
In 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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In 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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7Patch
- https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7Patch
- https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3Patch
- https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311bPatch
- https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4Patch
- https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.