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Red Hat Bugzilla – Attachment 686585 Details for
Bug 889935
CVE-2012-5667 grep: Integer overflow leading to heap-based buffer-overflow when reading large lines
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[patch]
Proposed fix
grep-2.6.3-mem-exhausted.patch (text/plain), 565 bytes, created by
Jaroslav Škarvada
on 2013-01-24 09:18:55 UTC
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Description:
Proposed fix
Filename:
MIME Type:
Creator:
Jaroslav Škarvada
Created:
2013-01-24 09:18:55 UTC
Size:
565 bytes
patch
obsolete
>diff -up grep-2.6.3/src/main.c.orig grep-2.6.3/src/main.c >--- grep-2.6.3/src/main.c.orig 2013-01-24 10:01:14.000000000 +0100 >+++ grep-2.6.3/src/main.c 2013-01-24 10:06:11.040824147 +0100 >@@ -479,6 +479,11 @@ fillbuf (size_t save, struct stats const > int cc = 1; > char *readbuf; > size_t readsize; >+ const size_t max_save = INT_MAX; >+ >+ /* 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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