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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d cve-icon cve-icon
https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f cve-icon cve-icon
https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690 cve-icon cve-icon
https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c cve-icon cve-icon
https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc cve-icon cve-icon
https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a cve-icon cve-icon
https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576 cve-icon cve-icon
https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd cve-icon cve-icon
https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025022616-CVE-2022-49191-ed02@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-49191 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-49191 cve-icon
History

Thu, 27 Feb 2025 13:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 26 Feb 2025 02:15:00 +0000

Type Values Removed Values Added
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.
Title mxser: fix xmit_buf leak in activate when LSR == 0xff
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-26T01:55:38.124Z

Updated: 2025-05-04T08:31:56.809Z

Reserved: 2025-02-26T01:49:39.286Z

Link: CVE-2022-49191

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-02-26T07:00:56.183

Modified: 2025-02-26T07:00:56.183

Link: CVE-2022-49191

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-02-26T00:00:00Z

Links: CVE-2022-49191 - Bugzilla