diff options
Diffstat (limited to 'posix/regexec.c')
| -rw-r--r-- | posix/regexec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/posix/regexec.c b/posix/regexec.c index 949c170..f877016 100644 --- a/posix/regexec.c +++ b/posix/regexec.c @@ -4104,6 +4104,10 @@ extend_buffers (re_match_context_t *mctx) reg_errcode_t ret; re_string_t *pstr = &mctx->input; + /* Avoid overflow. */ + if (BE (INT_MAX / 2 / sizeof (re_dfastate_t *) <= pstr->bufs_len, 0)) + return REG_ESPACE; + /* Double the lengthes of the buffers. */ ret = re_string_realloc_buffers (pstr, pstr->bufs_len * 2); if (BE (ret != REG_NOERROR, 0)) |