CVE-2022-48791 scsi: pm8001: Fix use-after-free for aborted TMF sas_task
A use-after-free vulnerability in the Linux kernel's pm8001 SCSI driver allows attackers to cause denial of service or potentially execute code via aborted TMF tasks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-48791?
CVE-2022-48791 is a high-severity use after free vulnerability in Linux kernel, published on 16 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-416
Which versions are affected by CVE-2022-48791?
It affects 1 product.
Linux distribution packages (5)
kgraft-patch-SLE12-SP5_Update_60 SUSE:Linux Enterprise Live Patching 12 SP5 | All versions | 6-2.1 |
kernel-rt SUSE:Linux Enterprise Micro 5.1 | All versions | 5.3.18-150300.184.1 |
kernel-source-rt SUSE:Linux Enterprise Micro 5.1 | All versions | 5.3.18-150300.184.1 |
kernel-rt SUSE:Linux Enterprise Micro 5.2 | All versions | 5.3.18-150300.184.1 |
kernel-source-rt SUSE:Linux Enterprise Micro 5.2 | All versions | 5.3.18-150300.184.1 |
Products include Linux kernel.
How do I fix CVE-2022-48791?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-48791 being exploited?
There is no known exploitation of CVE-2022-48791 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48791, GHSA-hrwc-pg2q-pgc2, SUSE-SU-2024:3304-1, SUSE-SU-2025:1092-1, UBUNTU-CVE-2022-48791.