CVE-2003-0955: OpenBSD

Medium severity, CVSS 4.6. EPSS: 1.1% chance of exploitation in the next 30 days.

OpenBSD kernel 3.3 and 3.4 allows local users to cause a denial of service (kernel panic) and possibly execute arbitrary code in 3.4 via a program with an invalid header that is not properly handled by (1) ibcs2_exec.c in the iBCS2 emulation (compat_ibcs2) or (2) exec_elf.c, which leads to a stack-based buffer overflow.

Affected products

• OpenBSD OpenBSD: version 3.3 only; version 3.4 only

Published 2003-12-15. Last modified 2026-06-16.