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| author | Paulo Alcantara <pc@manguebit.com> | 2024-04-02 16:34:04 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-10 16:36:05 +0200 |
| commit | 2cfff21732132e363b4cc275d63ea98f1af726c1 (patch) | |
| tree | f700df7c2c6f3c5cb9e395e81eb258c939e50ba4 | |
| parent | aa582b33f94453fdeaff1e7d0aa252c505975e01 (diff) | |
| download | linux-stable-2cfff21732132e363b4cc275d63ea98f1af726c1.tar.gz linux-stable-2cfff21732132e363b4cc275d63ea98f1af726c1.tar.bz2 linux-stable-2cfff21732132e363b4cc275d63ea98f1af726c1.zip | |
smb: client: fix potential UAF in cifs_signal_cifsd_for_reconnect()
commit e0e50401cc3921c9eaf1b0e667db174519ea939f 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/connect.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index 3fd1790138e7..97776dd12b6b 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -178,6 +178,8 @@ cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { + if (cifs_ses_exiting(ses)) + continue; spin_lock(&ses->chan_lock); for (i = 0; i < ses->chan_count; i++) { if (!ses->chans[i].server) |