mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2024-11-27 03:41:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

Do not let scanf("%4p") accept "(nil)". Fixes bug 16055

Browse Source
This commit is contained in:
Ondřej Bílka 2013-11-18 12:41:00 +01:00
parent dd8082389e
commit 728dab0e13
4 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
ChangeLog
View File

@ -1,3 +1,10 @@
2013-11-07 Ondřej Bílka <neleai@seznam.cz>
[BZ #16055]
* stdio-common/vfscanf.c (_IO_vfscanf_internal): Limit width
when we match (nil).
* stdio-common/tst-sscanf.c (struct test): Add testcase.
2013-11-16 Joseph Myers <joseph@codesourcery.com>
* math/libm-test.inc (TEST_NAN_SIGN): New macro.

4
NEWS
View File

@ -17,8 +17,8 @@ Version 2.19
15825, 15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867, 15886,
15887, 15890, 15892, 15893, 15895, 15897, 15905, 15909, 15917, 15919,
15921, 15923, 15939, 15948, 15963, 15966, 15985, 15988, 15997, 16032,
16034, 16036, 16037, 16041, 16071, 16072, 16074, 16078, 16103, 16112,
16143, 16146, 16150, 16151, 16153, 16167, 16172.
16034, 16036, 16037, 16041, 16055, 16071, 16072, 16074, 16078, 16103,
16112, 16143, 16146, 16150, 16151, 16153, 16167, 16172.
* CVE-2012-4412 The strcoll implementation caches indices and rules for
large collation sequences to optimize multiple passes. This cache

2
stdio-common/tst-sscanf.c
View File

@ -92,6 +92,8 @@ struct test
{ L("foo bar"), L("foo bar"), 0 },
{ L("foo bar"), L("foo %d"), 0 },
{ L("foo bar"), L("foon%d"), 0 },
{ L("foo (nil)"), L("foo %p"), 1},
{ L("foo (nil)"), L("foo %4p"), 0},
{ L("foo "), L("foo %n"), 0 },
{ L("foo%bar1"), L("foo%%bar%d"), 1 },
/* Some OSes skip whitespace here while others don't. */

2
stdio-common/vfscanf.c
View File

@ -1757,7 +1757,7 @@ _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
we must recognize "(nil)" as well. */
if (__builtin_expect (wpsize == 0
&& (flags & READ_POINTER)
&& (width < 0 || width >= 0)
&& (width < 0 || width >= 5)
&& c == '('
&& TOLOWER (inchar ()) == L_('n')
&& TOLOWER (inchar ()) == L_('i')