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| author | Benjamin Gray <bgray@linux.ibm.com> | 2023-03-20 15:08:38 +1100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2023-04-16 17:37:01 +0900 |
| commit | 5efb685bb3af112038af78a2cdf28f0ffdad45f5 (patch) | |
| tree | 49ea55e7ce2803846e6399e0ccc6d09e3a7bb64d /lib | |
| parent | aa7d233f45b4c549750044c9921f7afcbe50925b (diff) | |
initramfs: Check negative timestamp to prevent broken cpio archive
Similar to commit 4c9d410f32b3 ("initramfs: Check timestamp to prevent
broken cpio archive"), except asserts that the timestamp is
non-negative. This can happen when the KBUILD_BUILD_TIMESTAMP is a value
before UNIX epoch, which may be set when making reproducible builds that
don't want to look like they use a valid date.
While support for dates before 1970 might not be supported, this is more
about preventing undetected CPIO corruption. The printf's use a minimum
length format specifier, and will happily make the field longer than 8
characters if they need to.
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Tested-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions