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| author | Gao Xiang <gaoxiang25@huawei.com> | 2020-01-07 03:25:46 +0100 |
|---|---|---|
| committer | Gao Xiang <gaoxiang25@huawei.com> | 2020-01-11 11:29:19 +0100 |
| commit | 4d2024370d877f9ac8b98694bcff666da6a5d333 (patch) | |
| tree | 33e0647654abdca047ab3584abc4a0b26378c84d /mm/khugepaged.c | |
| parent | erofs: remove void tagging/untagging of workgroup pointers (diff) | |
| download | linux-4d2024370d877f9ac8b98694bcff666da6a5d333.tar.xz linux-4d2024370d877f9ac8b98694bcff666da6a5d333.zip | |
erofs: fix out-of-bound read for shifted uncompressed block
rq->out[1] should be valid before accessing. Otherwise,
in very rare cases, out-of-bound dirty onstack rq->out[1]
can equal to *in and lead to unintended memmove behavior.
Link: https://lore.kernel.org/r/20200107022546.19432-1-gaoxiang25@huawei.com
Fixes: 7fc45dbc938a ("staging: erofs: introduce generic decompression backend")
Cc: <stable@vger.kernel.org> # 5.3+
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Diffstat (limited to 'mm/khugepaged.c')
0 files changed, 0 insertions, 0 deletions