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| author | Pi-Hsun Shih <pihsun@chromium.org> | 2019-05-20 14:51:19 +0800 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2019-05-31 00:32:06 -0700 |
| commit | a9fb94a99bb515d8720ba8440ce3aba84aec80f8 (patch) | |
| tree | d272383bd25c4efd32c2d3449aeb76cabf52314b /fs/pstore/ram.c | |
| parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
| download | linux-a9fb94a99bb515d8720ba8440ce3aba84aec80f8.tar.gz linux-a9fb94a99bb515d8720ba8440ce3aba84aec80f8.tar.bz2 linux-a9fb94a99bb515d8720ba8440ce3aba84aec80f8.zip | |
pstore: Set tfm to NULL on free_buf_for_compression
Set tfm to NULL on free_buf_for_compression() after crypto_free_comp().
This avoid a use-after-free when allocate_buf_for_compression()
and free_buf_for_compression() are called twice. Although
free_buf_for_compression() freed the tfm, allocate_buf_for_compression()
won't reinitialize the tfm since the tfm pointer is not NULL.
Fixes: 95047b0519c1 ("pstore: Refactor compression initialization")
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'fs/pstore/ram.c')
0 files changed, 0 insertions, 0 deletions