CVE-2022-49191

high

Description

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.

References

https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4

https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd

https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576

https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a

https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc

https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c

https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690

https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f

https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d

Details

Source: Mitre, NVD

Published: 2025-02-26

Updated: 2025-02-26

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High