Vulnerability 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]
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.7, < 5.10.99 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/186edf7e368c40d06cf727a1ad14698ea67b74adPatch
- https://git.kernel.org/stable/c/70caa32e6d81f45f0702070c0e4dfe945e92fbd7Patch
- https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4Patch
- https://git.kernel.org/stable/c/f446089a268c8fc6908488e991d28a9b936293dbPatch
- https://git.kernel.org/stable/c/186edf7e368c40d06cf727a1ad14698ea67b74adPatch
- https://git.kernel.org/stable/c/70caa32e6d81f45f0702070c0e4dfe945e92fbd7Patch
- https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4Patch
- https://git.kernel.org/stable/c/f446089a268c8fc6908488e991d28a9b936293dbPatch
FAQ
What is CVE-2022-48740?
CVE-2022-48740 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 co...
How severe is CVE-2022-48740?
CVE-2022-48740 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-48740?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.