diff options
| author | Russell King <rmk@armlinux.org.uk> | 2018-03-29 22:01:01 +0100 |
|---|---|---|
| committer | Russell King <rmk@armlinux.org.uk> | 2018-03-29 22:01:01 +0100 |
| commit | eb14a8b55208c1a7320035af045e38ecd6f5458a (patch) | |
| tree | ccf03439ccbdcc24ee5bac69ab204760722250c0 | |
| parent | f57f0bf8975d24fe1e7c4936fdfb5c3b123ab75f (diff) | |
ARM: Ensure kernel size tag is sized appropriatelyarm
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 2a7eea9..2a77e57 100644 --- a/kexec/arch/arm/kexec-zImage-arm.c +++ b/kexec/arch/arm/kexec-zImage-arm.c @@ -567,7 +567,7 @@ int zImage_arm_load(int argc, char **argv, const char *buf, off_t len, * overwritten. */ tag = find_extension_tag(buf, len, ZIMAGE_TAG_KRNL_SIZE); - 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); |