SB2025050463 - Improper locking in Linux kernel
Published: May 4, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025050463
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) Improper locking (CVE-ID: CVE-2023-53109)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the LL_RESERVED_SPACE() function in net/ipv6/ip6_tunnel.c, within the ip_md_tunnel_xmit() and ip_tunnel_xmit() functions in net/ipv4/ip_tunnel.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/4b397c06cb987935b1b097336532aa6b4210e091
- https://git.kernel.org/stable/c/51f3bd3765bc5ca4583af07a00833da00d2ace1d
- https://git.kernel.org/stable/c/5aaab217c8f5387b9c5fff9e940d80f135e04366
- https://git.kernel.org/stable/c/8e206f66d824b3b28a7f9ee1366dfc79a937bb46
- https://git.kernel.org/stable/c/9b86a8702b042ee4e15d2d46375be873a6a8834f
- https://git.kernel.org/stable/c/a69b72b57b7d269e833e520ba7500d556e8189b6
- https://git.kernel.org/stable/c/be59b87ee4aed81db7c10e44f603866a0ac3ca5d
- https://git.kernel.org/stable/c/e0a557fc1daf5c1086e47150a4571aebadbb62be
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.104