CVE-2026-18938

A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.

• p11-kit 0.26.5-1 (bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1144476) [trixie] - p11-kit (Minor issue) [bookworm] - p11-kit (Minor issue) https://github.com/p11-glue/p11-kit/pull/777 Fixed by: https://github.com/p11-glue/p11-kit/commit/3e64244e538550c6a7fcf826fa8c50a4604416dc (0.26.5)