CVE-2022-49957
Linux Kernel KCM Data Corruption 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.
INFO
Published Date :
June 18, 2025, 11:15 a.m.
Last Modified :
June 18, 2025, 1:46 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel packages.
- Reboot the system to apply updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49957.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49957 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49957
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-49957 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49957 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 18, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267cc Added Reference https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9 Added Reference https://git.kernel.org/stable/c/473f394953216614087f4179e55cdf0cf616a13b Added Reference https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5 Added Reference https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bf Added Reference https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8 Added Reference https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6