[libvirt PATCH v2 1/2] virFileReadLimFD: Cast maxlen to size_t before adding

If the function is called with maxlen equal to `INT_MAX`, adding one will trigger a signed integer overflow. Signed-off-by: Tim Wiederhake <twiederh(a)redhat.com&gt; --- src/util/virfile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/util/virfile.c b/src/util/virfile.c index 723e1ca6e5..ad491251a2 100644 --- a/src/util/virfile.c +++ b/src/util/virfile.c @@ -1422,7 +1422,7 @@ virFileReadLimFD(int fd, int maxlen, char **buf) errno = EINVAL; return -1; } - s = saferead_lim(fd, maxlen+1, &len); + s = saferead_lim(fd, (size_t) maxlen + 1, &len); if (s == NULL) return -1; if (len > maxlen || (int)len != len) { -- 2.31.1