tequilaOS/platform_external_dtc
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libfdt: Handle failed get_name() on BEGIN_NODE

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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: a2def54799 ("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>
This commit is contained in:
Pierre-Clément Tosi 2022-07-14 09:38:48 +01:00 committed by David Gibson
parent c7c7f17a83
commit fda71da26e
1 changed files with 1 additions and 1 deletions
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libfdt/fdt_check.c
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@ -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;