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| author | Pierre-Clément Tosi <ptosi@google.com> | 2022-07-14 09:38:48 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2022-07-26 21:46:18 +1000 |
| commit | fda71da26e7fa00966a58afeb2114269b5512e59 (patch) | |
| tree | 1ca61f50083ff1fbb2dc7dd86e47b23650801714 /libfdt/fdt_check.c | |
| parent | c7c7f17a83d5ec1049ddfcaf22f40fcdc53ac0c4 (diff) | |
| download | dtc-fda71da26e7fa00966a58afeb2114269b5512e59.zip dtc-fda71da26e7fa00966a58afeb2114269b5512e59.tar.gz dtc-fda71da26e7fa00966a58afeb2114269b5512e59.tar.bz2 | |
libfdt: Handle failed get_name() on BEGIN_NODE
Validate the return value of fdt_get_name() as an ill-formed DT, causing
it to fail, could result in fdt_check_full() dereferencing NULL.
fixes: a2def5479950 ("libfdt: Check that the root-node name is empty")
Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Message-Id: <20220714083848.958492-1-ptosi@google.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'libfdt/fdt_check.c')
| -rw-r--r-- | libfdt/fdt_check.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libfdt/fdt_check.c b/libfdt/fdt_check.c index fa410a8..71390ee 100644 --- a/libfdt/fdt_check.c +++ b/libfdt/fdt_check.c @@ -66,7 +66,7 @@ int fdt_check_full(const void *fdt, size_t bufsize) int len; name = fdt_get_name(fdt, offset, &len); - if (*name || len) + if (!name || *name || len) return -FDT_ERR_BADSTRUCTURE; } break; |