SB2025050238 - Memory leak in Linux kernel net driver
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050238
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-49871)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the local_bh_disable() function in drivers/net/tun.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1118b2049d77ca0b505775fc1a8d1909cf19a7ec
- https://git.kernel.org/stable/c/223ef6a94e52331a6a7ef31e59921e0e82d2d40a
- https://git.kernel.org/stable/c/3401f964028ac941425b9b2c8ff8a022539ef44a
- https://git.kernel.org/stable/c/8b12a020b20a78f62bedc50f26db3bf4fadf8cb9
- https://git.kernel.org/stable/c/a4f73f6adc53fd7a3f9771cbc89a03ef39b0b755
- https://git.kernel.org/stable/c/d7569302a7a52a9305d2fb054df908ff985553bb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.79