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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 <levertond@googlemail.com>
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/lib/sh/eaccess.c
--- bash-4.2/lib/sh/eaccess.c
***************
*** 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);
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