Bugzilla – Bug 1228002
VUL-0: CVE-2022-48791: kernel: scsi: pm8001: Fix use-after-free for aborted TMF sas_task
Last modified: 2024-07-18 14:57:20 UTC
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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-48791 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-48791.mbox https://git.kernel.org/stable/c/d872e7b5fe38f325f5206b6872746fa02c2b4819 https://git.kernel.org/stable/c/3c334cdfd94945b8edb94022a0371a8665b17366 https://git.kernel.org/stable/c/510b21442c3a2e3ecc071ba3e666b320e7acdd61 https://git.kernel.org/stable/c/61f162aa4381845acbdc7f2be4dfb694d027c018 https://www.cve.org/CVERecord?id=CVE-2022-48791 https://bugzilla.redhat.com/show_bug.cgi?id=2298127