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| author | Ondřej Bílka <neleai@seznam.cz> | 2014-06-05 19:21:32 +0200 |
|---|---|---|
| committer | Ondřej Bílka <neleai@seznam.cz> | 2014-06-05 19:25:23 +0200 |
| commit | d89b3d80f92035acda41010b8d68b32bc471b846 (patch) | |
| tree | c89c96980db91624a932dbc01d410930600f2361 | |
| parent | bd1b9d956b9ce90a5fa265bde97d984129cffae9 (diff) | |
| download | glibc-d89b3d80f92035acda41010b8d68b32bc471b846.tar glibc-d89b3d80f92035acda41010b8d68b32bc471b846.tar.gz glibc-d89b3d80f92035acda41010b8d68b32bc471b846.tar.bz2 glibc-d89b3d80f92035acda41010b8d68b32bc471b846.zip | |
Fix memory overrun in getifaddrs_internal. Fixes bug 15698.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | NEWS | 22 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ifaddrs.c | 4 |
3 files changed, 19 insertions, 13 deletions
@@ -1,3 +1,9 @@ +2014-06-05 Ondřej Bílka <neleai@seznam.cz> + + [BZ #15698] + * sysdeps/unix/sysv/linux/ifaddrs.c (getifaddrs_internal): Fix + memory overrun. + 2014-06-05 Joseph Myers <joseph@codesourcery.com> * Rules (make-test-out): Include @@ -9,17 +9,17 @@ Version 2.20 * The following bugs are resolved with this release: - 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514, - 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16348, 16349, - 16357, 16362, 16447, 16516, 16532, 16545, 16564, 16574, 16599, 16600, - 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, - 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16683, 16689, 16695, - 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740, - 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796, - 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16849, 16854, 16876, - 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915, 16916, 16917, - 16922, 16927, 16928, 16932, 16943, 16958, 16966, 16967, 16965, 16977, - 16978, 16984, 16990, 17009. + 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, + 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, + 16348, 16349, 16357, 16362, 16447, 16516, 16532, 16545, 16564, 16574, + 16599, 16600, 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, + 16634, 16639, 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16683, + 16689, 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, + 16739, 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, + 16791, 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16849, + 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915, + 16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958, 16965, 16966, + 16967, 16977, 16978, 16984, 16990, 17009. * The minimum Linux kernel version that this version of the GNU C Library can be used with is 2.6.32. diff --git a/sysdeps/unix/sysv/linux/ifaddrs.c b/sysdeps/unix/sysv/linux/ifaddrs.c index d83e8f8e84..6deb09445b 100644 --- a/sysdeps/unix/sysv/linux/ifaddrs.c +++ b/sysdeps/unix/sysv/linux/ifaddrs.c @@ -780,10 +780,10 @@ getifaddrs_internal (struct ifaddrs **ifap) else preflen = ifam->ifa_prefixlen; - for (i = 0; i < (preflen / 8); i++) + for (i = 0; i < ((preflen - 1) / 8); i++) *cp++ = 0xff; c = 0xff; - c <<= (8 - (preflen % 8)); + c <<= ((128 - preflen) % 8); *cp = c; } } |