CVE-2022-48791
In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Fix use-after-free for aborted TMF sas_task Currently a use-after-free may occur if a TMF sas_task is aborted before we handle the IO completion in mpi_ssp_completion().
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). 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 for aborted TMF sas_task Currently a use-after-free may occur if a TMF sas_task is aborted before we handle the IO completion in mpi_ssp_completion(). The abort occurs due to timeout. When the timeout occurs, the SAS_TASK_STATE_ABORTED flag is set and the sas_task is freed in pm8001_exec_internal_tmf_task(). However, if the I/O completion occurs later, the I/O completion still thinks that the sas_task is available. Fix this by clearing the ccb->task if the TMF times out - the I/O completion handler does nothing if this pointer is cleared.
- 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
- 0.25% probability · 16th 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/3c334cdfd94945b8edb94022a0371a8665b17366Patch
- https://git.kernel.org/stable/c/510b21442c3a2e3ecc071ba3e666b320e7acdd61Patch
- https://git.kernel.org/stable/c/61f162aa4381845acbdc7f2be4dfb694d027c018Patch
- https://git.kernel.org/stable/c/d872e7b5fe38f325f5206b6872746fa02c2b4819Patch
- https://git.kernel.org/stable/c/3c334cdfd94945b8edb94022a0371a8665b17366Patch
- https://git.kernel.org/stable/c/510b21442c3a2e3ecc071ba3e666b320e7acdd61Patch
- https://git.kernel.org/stable/c/61f162aa4381845acbdc7f2be4dfb694d027c018Patch
- https://git.kernel.org/stable/c/d872e7b5fe38f325f5206b6872746fa02c2b4819Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.