diff options
| author | Russell King <rmk@armlinux.org.uk> | 2018-03-29 22:01:01 +0100 |
|---|---|---|
| committer | Russell King <rmk@armlinux.org.uk> | 2023-03-06 12:33:37 +0000 |
| commit | a37553d06bf64bdc70d3f167fdffbce86d54d925 (patch) | |
| tree | de3a7732c85c737679582c9ad41c65dab926139e | |
| parent | 63e9a012112e418876413bf45440118d69d85189 (diff) | |
ARM: ensure kernel size tag is sized appropriately
Ensure that the kernel size tag is an appropriate size before using
the information contained within it.
Signed-off-by: Russell King <rmk@armlinux.org.uk>
| -rw-r--r-- | kexec/arch/arm/kexec-zImage-arm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kexec/arch/arm/kexec-zImage-arm.c b/kexec/arch/arm/kexec-zImage-arm.c index 8b474dd..7457596 100644 --- a/kexec/arch/arm/kexec-zImage-arm.c +++ b/kexec/arch/arm/kexec-zImage-arm.c @@ -669,7 +669,7 @@ int zImage_arm_load(int argc, char **argv, const char *buf, off_t len, dbgprintf("zImage requires 0x%08llx bytes\n", (unsigned long long)len); - if (tag) { + if (tag && tag->hdr.size >= 2) { uint32_t *p = (void *)buf + le32_to_cpu(tag->u.krnl_size.size_ptr); uint32_t edata_size = le32_to_cpu(get_unaligned(p)); uint32_t bss_size = le32_to_cpu(tag->u.krnl_size.bss_size); |