chore(libfdt): update to v1.7.0 source files
Update libfdt to source files from v1.7.0 release.
Upstream commit:
https://github.com/dgibson/dtc/commit/039a99414e778332d8f9c04cbd3072e1dcc62798
Change-Id: I7e0475d2ddb819691f476e1753d1c899f8d7c278
Signed-off-by: Maksims Svecovs <maksims.svecovs@arm.com>
diff --git a/lib/libfdt/fdt.c b/lib/libfdt/fdt.c
index 9fe7cf4..20c6415 100644
--- a/lib/libfdt/fdt.c
+++ b/lib/libfdt/fdt.c
@@ -106,7 +106,6 @@
}
hdrsize = fdt_header_size(fdt);
if (!can_assume(VALID_DTB)) {
-
if ((fdt_totalsize(fdt) < hdrsize)
|| (fdt_totalsize(fdt) > INT_MAX))
return -FDT_ERR_TRUNCATED;
@@ -115,9 +114,7 @@
if (!check_off_(hdrsize, fdt_totalsize(fdt),
fdt_off_mem_rsvmap(fdt)))
return -FDT_ERR_TRUNCATED;
- }
- if (!can_assume(VALID_DTB)) {
/* Bounds check structure block */
if (!can_assume(LATEST) && fdt_version(fdt) < 17) {
if (!check_off_(hdrsize, fdt_totalsize(fdt),
@@ -165,7 +162,7 @@
uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
{
const fdt32_t *tagp, *lenp;
- uint32_t tag;
+ uint32_t tag, len, sum;
int offset = startoffset;
const char *p;
@@ -191,12 +188,19 @@
lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));
if (!can_assume(VALID_DTB) && !lenp)
return FDT_END; /* premature end */
+
+ len = fdt32_to_cpu(*lenp);
+ sum = len + offset;
+ if (!can_assume(VALID_DTB) &&
+ (INT_MAX <= sum || sum < (uint32_t) offset))
+ return FDT_END; /* premature end */
+
/* skip-name offset, length and value */
- offset += sizeof(struct fdt_property) - FDT_TAGSIZE
- + fdt32_to_cpu(*lenp);
+ offset += sizeof(struct fdt_property) - FDT_TAGSIZE + len;
+
if (!can_assume(LATEST) &&
- fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 &&
- ((offset - fdt32_to_cpu(*lenp)) % 8) != 0)
+ fdt_version(fdt) < 0x10 && len >= 8 &&
+ ((offset - len) % 8) != 0)
offset += 4;
break;