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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2014-03-27 19:48:15 +0530 |
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| committer | Siddhesh Poyarekar <siddhesh@redhat.com> | 2014-03-27 19:48:15 +0530 |
| commit | ea7d8b95e2fcb81f68b04ed7787a3dbda023991a (patch) | |
| tree | 20e3018b10da00729cd8a8feec1e2265b173c321 /ChangeLog.4 | |
| parent | df5b85da90915ce6208ad737807e3d8f2a8fce87 (diff) | |
| download | glibc-ea7d8b95e2fcb81f68b04ed7787a3dbda023991a.tar.gz glibc-ea7d8b95e2fcb81f68b04ed7787a3dbda023991a.tar.xz glibc-ea7d8b95e2fcb81f68b04ed7787a3dbda023991a.zip | |
Avoid overlapping addresses to stpcpy calls in nscd (BZ #16760)
Calls to stpcpy from nscd netgroups code will have overlapping source and destination when all three values in the returned triplet are non-NULL and in the expected (host,user,domain) order. This is seen in valgrind as: ==3181== Source and destination overlap in stpcpy(0x19973b48, 0x19973b48) ==3181== at 0x4C2F30A: stpcpy (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==3181== by 0x12567A: addgetnetgrentX (string3.h:111) ==3181== by 0x12722D: addgetnetgrent (netgroupcache.c:665) ==3181== by 0x11114C: nscd_run_worker (connections.c:1338) ==3181== by 0x4E3C102: start_thread (pthread_create.c:309) ==3181== by 0x59B81AC: clone (clone.S:111) ==3181== Fix this by using memmove instead of stpcpy.
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