diff options
| author | Paulo Alcantara <pc@manguebit.com> | 2024-04-02 22:33:55 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2024-04-03 22:43:45 +0300 |
| commit | d3da25c5ac84430f89875ca7485a3828150a7e0a (patch) | |
| tree | ddb3406259fc8dbd7a84cc20bec31fb40f58367b /fs | |
| parent | 58acd1f497162e7d282077f816faa519487be045 (diff) | |
| download | linux-d3da25c5ac84430f89875ca7485a3828150a7e0a.tar.xz | |
smb: client: fix potential UAF in cifs_stats_proc_write()
Skip sessions that are being teared down (status == SES_EXITING) to
avoid UAF.
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/smb/client/cifs_debug.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c index c9aec9a38ad3..8535c9907462 100644 --- a/fs/smb/client/cifs_debug.c +++ b/fs/smb/client/cifs_debug.c @@ -678,6 +678,8 @@ static ssize_t cifs_stats_proc_write(struct file *file, } #endif /* CONFIG_CIFS_STATS2 */ list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { + if (cifs_ses_exiting(ses)) + continue; list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { atomic_set(&tcon->num_smbs_sent, 0); spin_lock(&tcon->stat_lock); |