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| author | Lennart Poettering <lennart@poettering.net> | 2019-03-20 10:30:31 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2019-03-20 10:48:33 +0100 |
| commit | e5e21a05076e60fe46eab4eb040735250ae3b814 (patch) | |
| tree | 3e06e298230e365cde01b23a56c60b841c8ffb0e /src/basic/alloc-util.c | |
| parent | e1ed99c8c89d6e4ca4df3e47617ff1f3e194cabb (diff) | |
| download | systemd-e5e21a05076e60fe46eab4eb040735250ae3b814.tar.gz | |
alloc-util: extra paranoid overflow check
Diffstat (limited to 'src/basic/alloc-util.c')
| -rw-r--r-- | src/basic/alloc-util.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/basic/alloc-util.c b/src/basic/alloc-util.c index b28fb95ccf..15b67665d2 100644 --- a/src/basic/alloc-util.c +++ b/src/basic/alloc-util.c @@ -27,6 +27,9 @@ void* memdup_suffix0(const void *p, size_t l) { /* The same as memdup() but place a safety NUL byte after the allocated memory */ + if (_unlikely_(l == SIZE_MAX)) /* prevent overflow */ + return NULL; + ret = malloc(l + 1); if (!ret) return NULL; |