[Bug 796243] New: Segmentation fault in "uniq" with long line input

bugzilla_noreply＠novell.com

31 Dec 2012 31 Dec '12

17:57

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c0 Summary: Segmentation fault in "uniq" with long line input Classification: openSUSE Product: openSUSE 12.2 Version: Final Platform: x86-64 OS/Version: openSUSE 12.2 Status: NEW Severity: Major Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: yuvalery@gmail.com QAContact: qa-bugs@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20100101 Firefox/17.0 "uniq" crashes if input stream contains very large sequence of NULL bytes % perl -e 'print "1","\0"x50000000,"\r\n\r\n"' | uniq [2] 8244 done perl -e 'print "1","\0"x50000000,"\r\n\r\n"' | 8245 segmentation fault uniq Depending on the stack size the NULL-character sequence can be as short as ~10MB (in the above example 50MB) Reproducible: Always Steps to Reproduce: 1. perl -e 'print "1","\0"x50000000,"\r\n\r\n"' | uniq Actual Results: crash Expected Results: no crash The upstream version of coreutils does not have this problem (doesn't crash). The bug seems to be in the openSUSE specific multi-byte character patch (coreutils-i18n.patch). The crash happens in "different_multi" function due to call to "alloca" returning pointer beyond the stack. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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bugzilla_noreply＠novell.com

6 Jan 6 Jan

23:16

New subject: [Bug 796243] Segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c Jiaying ren changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jren@suse.com AssignedTo|bnc-team-screening@forge.pr |pth@suse.com |ovo.novell.com | -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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7 Jan 7 Jan

13:31

New subject: [Bug 796243] Segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c Philipp Thomas changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P5 - None |P4 - Low Status|NEW |ASSIGNED CC| |mail@bernhard-voelker.de -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

15 Jan 15 Jan

14:29

New subject: [Bug 796243] Segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c Valery Valery changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |798538 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

14:43

New subject: [Bug 796243] Segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c Valery Valery changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |798541 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

16 Jan 16 Jan

13:12

New subject: [Bug 796243] Segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c Philipp Thomas changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pth@suse.com AssignedTo|pth@suse.com |security-team@suse.de -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

13:26

New subject: [Bug 796243] VUL-1: coreutils: segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c1 Sebastian Krahmer changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Segmentation fault in |VUL-1: coreutils: |"uniq" with long line input |segmentation fault in | |"uniq" with long line input --- Comment #1 from Sebastian Krahmer 2013-01-16 13:26:47 UTC --- Can reproduce it for 12.2 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

13:27

New subject: [Bug 796243] VUL-1: coreutils: segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c2 --- Comment #2 from Bernhard Voelker 2013-01-16 13:27:36 UTC --- 'man alloca': If the allocation causes stack overflow, program behavior is undefined. Replacing the use of alloca() by xmalloc() + free() works. I'm working on a patch. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

13:29

New subject: [Bug 796243] VUL-1: coreutils: segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c Sebastian Krahmer changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P4 - Low |P3 - Medium CC| |krahmer@suse.com, | |security-team@suse.de AssignedTo|security-team@suse.de |pth@suse.com Severity|Major |Normal -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

14:44

New subject: [Bug 796243] VUL-1: coreutils: segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c3 --- Comment #3 from Philipp Thomas 2013-01-16 15:44:52 CET --- I'm already working on a patch for all three bugs. For speed reasons my patch uses xmalloc for anything beyond 4k. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

21 Jan 21 Jan

08:37

New subject: [Bug 796243] VUL-1: coreutils: segmentation fault in "uniq" with long line input

https://bugzilla.novell.com/show_bug.cgi?id=796243 https://bugzilla.novell.com/show_bug.cgi?id=796243#c4 --- Comment #4 from Bernhard Voelker 2013-01-21 08:37:45 UTC --- Fixed in Base:System, submitted to Factory: https://build.opensuse.org/request/show/149348 Fixes for openSUSE:Maintenance pending. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.