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| author | Philippe Reynes <philippe.reynes@softathome.com> | 2020-07-02 19:31:29 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2020-07-20 11:37:47 -0600 |
| commit | 2a3be302d5dd221ea64b85a700746b322e30f064 (patch) | |
| tree | de991ce684d35059493ae9ca5f20a94c5f1695c4 /common | |
| parent | df1fa4b2239aaf2e4a7b72ff1e81cfa53af8b08e (diff) | |
| download | u-boot-2a3be302d5dd221ea64b85a700746b322e30f064.tar.gz u-boot-2a3be302d5dd221ea64b85a700746b322e30f064.tar.bz2 u-boot-2a3be302d5dd221ea64b85a700746b322e30f064.zip | |
lib: libfdt: fdt_region: avoid NULL pointer access
The function fdt_find_regions look in the exclude list for each
property, even if the name is NULL. It could happen if the fit
image is corrupted. On sandbox, it generates a segfault.
To avoid this issue, if the name of a property is NULL, we report
an error and avoid looking in the exclude list.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/fdt_region.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/common/fdt_region.c b/common/fdt_region.c index 667659054a..ff12c518e9 100644 --- a/common/fdt_region.c +++ b/common/fdt_region.c @@ -65,6 +65,8 @@ int fdt_find_regions(const void *fdt, char * const inc[], int inc_count, stop_at = offset; prop = fdt_get_property_by_offset(fdt, offset, NULL); str = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); + if (!str) + return -FDT_ERR_BADSTRUCTURE; if (str_in_list(str, exc_prop, exc_prop_count)) include = 0; break; |