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smb: client: fix potential UAF in cifs_stats_proc_show()
commit 0865ffefea
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>
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1 changed files with 2 additions and 0 deletions
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@ -739,6 +739,8 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
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}
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#endif /* STATS2 */
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list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
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if (cifs_ses_exiting(ses))
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continue;
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list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
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i++;
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seq_printf(m, "\n%d) %s", i, tcon->tree_name);
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