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Code Issues Releases Wiki Activity

Handle fdt splice size errors (addressed Mattia's comment)

pull/792/head
Daniele Lacamera 2026-06-10 21:10:32 +02:00
parent 82142f870d
commit 893973a207
2 changed files with 8 additions and 1 deletions
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1
.gitignore vendored
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@ -199,6 +199,7 @@ tools/unit-tests/unit-linux-loader-syssize
tools/unit-tests/unit-mpusize
tools/unit-tests/unit-otp-keystore
tools/unit-tests/unit-tpm-api-names
tools/unit-tests/unit-elf-bss-guard
# Elf preprocessing tools

8
src/fdt.c
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@ -281,9 +281,15 @@ static void fdt_del_last_string_(void *fdt, const char *s)
static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)
{
int data_size;
char *p, *end;
data_size = fdt_data_size_(fdt);
if (data_size < 0)
return data_size;
p = splicepoint;
end = (char*)fdt + fdt_data_size_(fdt);
end = (char*)fdt + data_size;
if (((p + oldlen) < p) || ((p + oldlen) > end)) {
return -FDT_ERR_BADOFFSET;
}