From f7b0194f9858d0248399ada65e77540f74d74da7 Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Thu, 2 Jun 2022 16:02:54 +0200 Subject: libblkid: (hfs) fix label use [fuzzing] Addresses: https://issues.redhat.com/browse/RHEL-16071 Upstream: http://github.com/util-linux/util-linux/commit/74e48269ee9a15e230e25d0e3d2e50f5b0ba2b04 Reported-by: Thibault Guittet Signed-off-by: Karel Zak --- libblkid/src/superblocks/hfs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libblkid/src/superblocks/hfs.c b/libblkid/src/superblocks/hfs.c index 9674b1481..68cb30edb 100644 --- a/libblkid/src/superblocks/hfs.c +++ b/libblkid/src/superblocks/hfs.c @@ -173,7 +173,10 @@ static int probe_hfs(blkid_probe pr, const struct blkid_idmag *mag) hfs_set_uuid(pr, hfs->finder_info.id, sizeof(hfs->finder_info.id)); - blkid_probe_set_label(pr, hfs->label, hfs->label_len); + size = hfs->label_len; + if ((size_t) size > sizeof(hfs->label)) + size = sizeof(hfs->label); + blkid_probe_set_label(pr, hfs->label, size); return 0; } -- 2.43.0