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| author | Richard Weinberger <richard@nod.at> | 2020-11-16 22:05:30 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2020-12-13 21:57:20 +0100 |
| commit | 20f1431160c6b590cdc269a846fc5a448abf5b98 (patch) | |
| tree | 5132362b34e3496054ec56c71fc1c3e4a41c9cf0 /fs/ubifs/auth.c | |
| parent | 619ea229e9b54e65955f8746a31ae15797d297fc (diff) | |
| download | linux-20f1431160c6b590cdc269a846fc5a448abf5b98.tar.bz2 | |
ubifs: wbuf: Don't leak kernel memory to flash
Write buffers use a kmalloc()'ed buffer, they can leak
up to seven bytes of kernel memory to flash if writes are not
aligned.
So use ubifs_pad() to fill these gaps with padding bytes.
This was never a problem while scanning because the scanner logic
manually aligns node lengths and skips over these gaps.
Cc: <stable@vger.kernel.org>
Fixes: 1e51764a3c2ac05a2 ("UBIFS: add new flash file system")
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/auth.c')
0 files changed, 0 insertions, 0 deletions