diff options
| author | Richard Weinberger <richard@nod.at> | 2020-11-16 22:05:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-17 13:55:13 +0100 |
| commit | b0260231660261a9b7b2eaaea5188baba163f81f (patch) | |
| tree | 4932e56f1ab020ba8daeb53a65423049072079e3 /kernel/locking/rtmutex-debug.c | |
| parent | b60abd189e520ac975d8921d052c2dea130c89b2 (diff) | |
ubifs: wbuf: Don't leak kernel memory to flash
commit 20f1431160c6b590cdc269a846fc5a448abf5b98 upstream
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>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/locking/rtmutex-debug.c')
0 files changed, 0 insertions, 0 deletions