diff options
Diffstat (limited to 'posix/regexec.c')
| -rw-r--r-- | posix/regexec.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/posix/regexec.c b/posix/regexec.c index c7d0b37ef5..3765d00ffd 100644 --- a/posix/regexec.c +++ b/posix/regexec.c @@ -3359,6 +3359,13 @@ build_trtable (const re_dfa_t *dfa, re_dfastate_t *state) if (BE (err != REG_NOERROR, 0)) goto out_free; + /* Avoid arithmetic overflow in size calculation. */ + if (BE ((((SIZE_MAX - (sizeof (re_node_set) + sizeof (bitset_t)) * SBC_MAX) + / (3 * sizeof (re_dfastate_t *))) + < ndests), + 0)) + goto out_free; + if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset_t)) * SBC_MAX + ndests * 3 * sizeof (re_dfastate_t *))) dest_states = (re_dfastate_t **) |