https://bugs.gentoo.org/431850 this is a minor tweak to the upstream patch to also apply to bash 4.1/4.0/3.2 BASH PATCH REPORT ================= Bash-Release: 4.2 Patch-ID: bash42-033 Bug-Reported-by: David Leverton Bug-Reference-ID: <4FCCE737.1060603@googlemail.com> Bug-Reference-URL: Bug-Description: Bash uses a static buffer when expanding the /dev/fd prefix for the test and conditional commands, among other uses, when it should use a dynamic buffer to avoid buffer overflow. Patch (apply with `patch -p0'): *** ../bash-4.2-patched/lib/sh/eaccess.c 2011-01-08 20:50:10.000000000 -0500 --- lib/sh/eaccess.c 2012-06-04 21:06:43.000000000 -0400 *************** *** 83,86 **** --- 83,88 ---- struct stat *finfo; { + static char *pbuf = 0; + if (*path == '\0') { *************** *** 107,111 **** On most systems, with the notable exception of linux, this is effectively a no-op. */ ! char pbuf[32]; strcpy (pbuf, DEV_FD_PREFIX); strcat (pbuf, path + 8); --- 109,113 ---- On most systems, with the notable exception of linux, this is effectively a no-op. */ ! pbuf = xrealloc (pbuf, sizeof (DEV_FD_PREFIX) + strlen (path + 8)); strcpy (pbuf, DEV_FD_PREFIX); strcat (pbuf, path + 8);