CVE-2022-49191

low-risk
Published 2025-02-26

In the Linux kernel, the following vulnerability has been resolved: mxser: fix xmit_buf leak in activate when LSR == 0xff When LSR is 0xff in ->activate() (rather unlike), we return an error. Provided ->shutdown() is not called when ->activate() fails, nothing actually frees the buffer in this case. Fix this by properly freeing the buffer in a designated label. We jump there also from the "!info->type" if now too.

Do I need to act?

-
0.06% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (9)

Patch https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d
Patch https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f
Patch https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690
Patch https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c
Patch https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc
Patch https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a
Patch https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576
Patch https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd
Patch https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal