Detections
Analytics
CVE-2022-48740
high
Description
In the Linux kernel, the following vulnerability has been resolved: selinux: fix double free of cond_list on error paths On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop. Also consistently reset the cond_list pointer to NULL after freeing. [PM: fix line lengths in the description]
References
https://git.kernel.org/stable/c/f446089a268c8fc6908488e991d28a9b936293db
https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4
https://git.kernel.org/stable/c/70caa32e6d81f45f0702070c0e4dfe945e92fbd7
https://git.kernel.org/stable/c/186edf7e368c40d06cf727a1ad14698ea67b74ad