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| author | Jan Kara <[email protected]> | 2024-06-13 17:02:34 +0200 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2024-07-08 23:59:37 -0400 |
| commit | 65121eff3e4c8c90f8126debf3c369228691c591 (patch) | |
| tree | 59e70a576d62863e77bbd20bc814d40c87d785f2 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 7882b0187bbeb647967a7b5998ce4ad26ef68a9a (diff) | |
ext4: avoid writing unitialized memory to disk in EA inodes
If the extended attribute size is not a multiple of block size, the last
block in the EA inode will have uninitialized tail which will get
written to disk. We will never expose the data to userspace but still
this is not a good practice so just zero out the tail of the block as it
isn't going to cause a noticeable performance overhead.
Fixes: e50e5129f384 ("ext4: xattr-in-inode support")
Reported-by: [email protected]
Reported-by: Hugh Dickins <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Theodore Ts'o <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions