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| author | Mikulas Patocka <mpatocka@redhat.com> | 2019-03-13 07:56:02 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2019-04-01 16:11:11 -0400 |
| commit | 0d74e6a3b6421d98eeafbed26f29156d469bc0b5 (patch) | |
| tree | 13b9ab66fe1553126777b6afb114612743b6778c /README | |
| parent | 79a3aaa7b82e3106be97842dedfd8429248896e6 (diff) | |
| download | lwn-0d74e6a3b6421d98eeafbed26f29156d469bc0b5.tar.gz lwn-0d74e6a3b6421d98eeafbed26f29156d469bc0b5.zip | |
dm integrity: change memcmp to strncmp in dm_integrity_ctr
If the string opt_string is small, the function memcmp can access bytes
that are beyond the terminating nul character. In theory, it could cause
segfault, if opt_string were located just below some unmapped memory.
Change from memcmp to strncmp so that we don't read bytes beyond the end
of the string.
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions