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| author | Aurelien Jarno <aurelien@aurel32.net> | 2015-03-11 21:03:50 -0400 |
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| committer | Carlos O'Donell <carlos@systemhalted.org> | 2015-03-11 21:07:32 -0400 |
| commit | 6a1cf708dd5681b517744d6d4fac02e4e4a0aa2e (patch) | |
| tree | a965b2d1be84995f55dbfdeb479b4a2b74f1ec69 /NEWS | |
| parent | a2d4cf72c0ab07d4e58b42c01ac3ed2b95ca8d9b (diff) | |
| download | glibc-6a1cf708dd5681b517744d6d4fac02e4e4a0aa2e.tar.gz glibc-6a1cf708dd5681b517744d6d4fac02e4e4a0aa2e.tar.xz glibc-6a1cf708dd5681b517744d6d4fac02e4e4a0aa2e.zip | |
Fix ldconfig segmentation fault with corrupted cache (Bug 18093).
ldconfig is using an aux-cache to speed up the ld.so.cache update. It is read by mmaping the file to a structure which contains data offsets used as pointers. As they are not checked, it is not hard to get ldconfig to segfault with a corrupted file. This happens for instance if the file is truncated, which is common following a filesystem check following a system crash. This can be reproduced for example by truncating the file to roughly half of it's size. There is already some code in elf/cache.c (load_aux_cache) to check for a corrupted aux cache, but it happens to be broken and not enough. The test (aux_cache->nlibs >= aux_cache_size) compares the number of libs entry with the cache size. It's a non sense, as it basically assumes that each library entry is a 1 byte... Instead this commit computes the theoretical cache size using the headers and compares it to the real size.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/NEWS b/NEWS index 1cee779d76..6568085333 100644 --- a/NEWS +++ b/NEWS @@ -14,7 +14,7 @@ Version 2.22 17792, 17836, 17912, 17916, 17932, 17944, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998, 17999, 18019, 18020, 18029, 18030, 18032, 18036, 18038, 18039, 18042, 18043, 18046, 18047, 18068, - 18104, 18110, 18111. + 18093, 18104, 18110, 18111. * Character encoding and ctype tables were updated to Unicode 7.0.0, using new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red |