Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work. And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check. This also makes a lockdep warning reported by syzbot go away.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.9.84, < 4.10 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267ccPatch
- https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9Patch
- https://git.kernel.org/stable/c/473f394953216614087f4179e55cdf0cf616a13bPatch
- https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5Patch
- https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bfPatch
- https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8Patch
- https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6Patch
FAQ
What is CVE-2022-49957?
CVE-2022-49957 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initiali...
How severe is CVE-2022-49957?
CVE-2022-49957 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49957?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.