diff options
| author | Alexei Filippov <[email protected]> | 2023-08-19 20:32:16 +0300 |
|---|---|---|
| committer | Dave Kleikamp <[email protected]> | 2023-08-29 12:25:47 -0500 |
| commit | 0225e10972fa809728b8d4c1bd2772b3ec3fdb57 (patch) | |
| tree | c009f0005bf638e1f9caf742db11aff4a3d70172 /lib/test_fortify/write_overflow-memcpy.c | |
| parent | 87098a0d9e42cba2ec49b56dfbf1e4944a6e7bb6 (diff) | |
jfs: validate max amount of blocks before allocation.
The lack of checking bmp->db_max_freebud in extBalloc() can lead to
shift out of bounds, so this patch prevents undefined behavior, because
bmp->db_max_freebud == -1 only if there is no free space.
Signed-off-by: Aleksei Filippov <[email protected]>
Signed-off-by: Dave Kleikamp <[email protected]>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-and-tested-by: [email protected]
Closes: https://syzkaller.appspot.com/bug?id=01abadbd6ae6a08b1f1987aa61554c6b3ac19ff2
Diffstat (limited to 'lib/test_fortify/write_overflow-memcpy.c')
0 files changed, 0 insertions, 0 deletions