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| author | Paulo Alcantara <pc@manguebit.com> | 2024-04-02 16:33:56 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-10 16:38:21 +0200 |
| commit | 1e12f0d5c66f07c934041621351973a116fa13c7 (patch) | |
| tree | 0c8b195e03097318465dfaf43e25545af5ed72b1 | |
| parent | 5b5475ce69f02ecc1b13ea23106e5b89c690429b (diff) | |
| download | linux-stable-1e12f0d5c66f07c934041621351973a116fa13c7.tar.gz linux-stable-1e12f0d5c66f07c934041621351973a116fa13c7.tar.bz2 linux-stable-1e12f0d5c66f07c934041621351973a116fa13c7.zip | |
smb: client: fix potential UAF in cifs_stats_proc_show()
commit 0865ffefea197b437ba78b5dd8d8e256253efd65 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 739525f976ce..aa95fa95ca11 100644 --- a/fs/smb/client/cifs_debug.c +++ b/fs/smb/client/cifs_debug.c @@ -739,6 +739,8 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v) } #endif /* 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) { i++; seq_printf(m, "\n%d) %s", i, tcon->tree_name); |