SB20260527114 - Improper input validation in Linux kernel rxrpc
Published: May 27, 2026
Security Bulletin ID
SB20260527114
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper input validation (CVE-ID: CVE-2026-46085)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the rxkad crypto handling in rxrpc when processing a packet with a misaligned crypto length. A remote attacker can send a specially crafted packet to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/440d20d95e844b657a93a0b2dcc2aae155efdce6
- https://git.kernel.org/stable/c/af9271eb666d07b6f65612dc160a47f7cb5220ed
- https://git.kernel.org/stable/c/def304aae2edf321d2671fd6ca766a93c21f877e
- https://git.kernel.org/stable/c/f0d3efd03b2a9e0f1ffa6df8fcb264af3d494286
- https://git.kernel.org/stable/c/f1c6bd0cc786a8fa74829ce3c4b3673944a308f4