diff options
| author | Haimin Zhang <tcs_kernel@tencent.com> | 2022-03-22 21:59:17 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-13 21:01:03 +0200 |
| commit | b9c5ac0a15f24d63b20f899072fa6dd8c93af136 (patch) | |
| tree | ec3797df22880e3c092eccadae1a30bf25267700 /sound | |
| parent | c69b442125bf009fce26e15aa5616caf8a3673c3 (diff) | |
jfs: prevent NULL deref in diFree
[ Upstream commit a53046291020ec41e09181396c1e829287b48d47 ]
Add validation check for JFS_IP(ipimap)->i_imap to prevent a NULL deref
in diFree since diFree uses it without do any validations.
When function jfs_mount calls diMount to initialize fileset inode
allocation map, it can fail and JFS_IP(ipimap)->i_imap won't be
initialized. Then it calls diFreeSpecial to close fileset inode allocation
map inode and it will flow into jfs_evict_inode. Function jfs_evict_inode
just validates JFS_SBI(inode->i_sb)->ipimap, then calls diFree. diFree use
JFS_IP(ipimap)->i_imap directly, then it will cause a NULL deref.
Reported-by: TCS Robot <tcs_robot@tencent.com>
Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions