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The patch to fix CVE-2012-5667
Reference: https://bugzilla.redhat.com/attachment.cgi?id=686605&action=diff
Multiple integer overflows in GNU Grep before 2.11 might allow
context-dependent attackers to execute arbitrary code via vectors
involving a long input line that triggers a heap-based buffer overflow.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-5667
Upstream-Status: Inappropriate [other]
This version of GNU Grep has been abandoned upstream and they are no longer
accepting patches. This is not a backport.
Signed-off-by Ming Liu <ming.liu@windriver.com>
---
grep.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/src/grep.c 2013-05-15 13:39:33.359191769 +0800
+++ a/src/grep.c 2013-05-15 13:50:22.609191882 +0800
@@ -306,6 +306,11 @@ fillbuf (size_t save, struct stats const
int cc = 1;
char *readbuf;
size_t readsize;
+ const size_t max_save = INT_MAX / 2;
+
+ /* Limit the amount of saved data to INT_MAX to fix CVE-2012-5667 */
+ if (save > max_save)
+ error (2, 0, _("line too long"));
/* Offset from start of buffer to start of old stuff
that we want to save. */
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