SB2026081512 - Memory leak in Linux kernel rxrpc
Published: August 15, 2026
Security Bulletin ID
SB2026081512
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-74432)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in rxrpc_recvmsg() when handling recvmsg calls with MSG_PEEK on an already released call. A local user can invoke recvmsg with MSG_PEEK to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/04c7103dc0923cc6ac95b97aa66bab70da7ace84
- https://git.kernel.org/stable/c/2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5
- https://git.kernel.org/stable/c/4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303c
- https://git.kernel.org/stable/c/86eff3140c9d4b52bba13d1cba266da933403e51
- https://git.kernel.org/stable/c/e473cd3046a1aaec1e39af5df2042ce7c04d5e74