diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2015-12-10 18:06:07 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2015-12-10 18:06:07 +0000 |
| commit | 8ca5cc7124d305c5fc6badc4c34332034984293a (patch) | |
| tree | 2f0e0e636093903f989c5fc854abae402af9adae /lib/libc | |
| parent | f5e464616daa6d10d2cac98e8fbef66c47ff90ab (diff) | |
tiny sanity check on file size
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/stdlib/icdb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/libc/stdlib/icdb.c b/lib/libc/stdlib/icdb.c index 16d5300ab3d..e33a043795f 100644 --- a/lib/libc/stdlib/icdb.c +++ b/lib/libc/stdlib/icdb.c @@ -1,4 +1,4 @@ -/* $OpenBSD: icdb.c,v 1.3 2015/11/25 15:49:50 guenther Exp $ */ +/* $OpenBSD: icdb.c,v 1.4 2015/12/10 18:06:06 tedu Exp $ */ /* * Copyright (c) 2015 Ted Unangst <tedu@openbsd.org> * @@ -162,6 +162,8 @@ icdb_open(const char *name, int flags, uint32_t version) return NULL; if (fstat(fd, &sb) != 0) goto fail; + if (sb.st_size < sizeof(struct icdbinfo)) + goto fail; ptr = mmap(NULL, sb.st_size, PROT_READ | ((flags & O_RDWR) ? PROT_WRITE : 0), MAP_SHARED, fd, 0); if (ptr == MAP_FAILED) |