CVE-2022-49191

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49191
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
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 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

23 Sep 2025, 13:44

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-401
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mxser: se corrige la fuga de xmit_buf en activate cuando LSR == 0xff Cuando LSR es 0xff en ->activate() (bastante diferente), devolvemos un error. Siempre que no se llame a ->shutdown() cuando ->activate() falla, en realidad nada libera el búfer en este caso. Corrija esto liberando correctamente el búfer en una etiqueta designada. Saltamos allí también desde "!info->type" if now también.
References () https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d - () https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d - Patch
References () https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f - () https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f - Patch
References () https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690 - () https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690 - Patch
References () https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c - () https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c - Patch
References () https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc - () https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc - Patch
References () https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a - () https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a - Patch
References () https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576 - () https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576 - Patch
References () https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd - () https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd - Patch
References () https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 - () https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 - Patch

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-09-23 13:44

NVD link : CVE-2022-49191

Mitre link : CVE-2022-49191

CVE.ORG link : CVE-2022-49191

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime