From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C81A3FB21; Wed, 21 Feb 2024 13:34:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708522488; cv=none; b=ac9KcPct5An29iDCSB1U21QuM1cWiuPEnyrweWuBnSVz0xxuJjJ/fNdcYKnvRmDCipkumbCFwEvsST0QGx8fLlBQhwYOVuclN4NBljZ6r3iXlc3lVZorVW5M/+rYXIieRKbBWXZv6hWi7GOwUZe8D72C9ESNcQQhrB/V1D00l/A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708522488; c=relaxed/simple; bh=2836fKI8HXdbF5YYyi3OvS/M9G9CJDLxVCHKeAsdAvE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=n1JNnk5Ci6v41SEbRnfurxQisNCvel5TkzfQCAbxwnFhrVTthuc0kJ+ySO+ThWx3kLR62mcbGNJZ8V61g+wKV4rtU8f+N/p/NDTg6nI+2e54yq1w2Wgvs0uWdJ3tUWOMSR5C8/K0CO1gTb6RKfv0WNYSa7iCMqdwpGQPyorSImI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lJlVoAlN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="lJlVoAlN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A011C433F1; Wed, 21 Feb 2024 13:34:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708522488; bh=2836fKI8HXdbF5YYyi3OvS/M9G9CJDLxVCHKeAsdAvE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lJlVoAlN/sD/8Wmi7CAdj8uPmCZ3o5XVbONHRtXGOBp75NYjZ5HNWO8aDmTs9nTSM ar8omQWUaTBUkVgyDeWfjJKKYWs1Mmkz0A/D99c3KkW0ZWyr6r1fi4VZqC8HZ6GyPQ JErKXOiU6s7nFz9ZNHUHH+8S4CHeJ+8zP9yVJEvQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Edward Adam Davis , Dave Kleikamp , Sasha Levin , syzbot+01cf2dbcbe2022454388@syzkaller.appspotmail.com Subject: [PATCH 5.15 148/476] jfs: fix uaf in jfs_evict_inode Date: Wed, 21 Feb 2024 14:03:19 +0100 Message-ID: <20240221130013.396101872@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221130007.738356493@linuxfoundation.org> References: <20240221130007.738356493@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Edward Adam Davis [ Upstream commit e0e1958f4c365e380b17ccb35617345b31ef7bf3 ] When the execution of diMount(ipimap) fails, the object ipimap that has been released may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs when rcu_core() calls jfs_free_node(). Therefore, when diMount(ipimap) fails, sbi->ipimap should not be initialized as ipimap. Reported-and-tested-by: syzbot+01cf2dbcbe2022454388@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis Signed-off-by: Dave Kleikamp Signed-off-by: Sasha Levin --- fs/jfs/jfs_mount.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/jfs/jfs_mount.c b/fs/jfs/jfs_mount.c index aa4ff7bcaff2..55702b31ab3c 100644 --- a/fs/jfs/jfs_mount.c +++ b/fs/jfs/jfs_mount.c @@ -172,15 +172,15 @@ int jfs_mount(struct super_block *sb) } jfs_info("jfs_mount: ipimap:0x%p", ipimap); - /* map further access of per fileset inodes by the fileset inode */ - sbi->ipimap = ipimap; - /* initialize fileset inode allocation map */ if ((rc = diMount(ipimap))) { jfs_err("jfs_mount: diMount failed w/rc = %d", rc); goto err_ipimap; } + /* map further access of per fileset inodes by the fileset inode */ + sbi->ipimap = ipimap; + return rc; /* -- 2.43.0