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Google: sys-kernel/csql-kernel-6_1, sys-kernel/csql-kernel-6_6: security update to 18613.339.97

medium Tenable Self-Hosted Container Security Plugin ID 472414

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: net: Fix null-ptr-deref by
 sock_lock_init_class_and_name() and rmmod. When I ran the repro [0] and waited a few seconds, I observed
 two LOCKDEP splats: a warning immediately followed by a null-ptr-deref. [1] Reproduction Steps: 1) Mount
 CIFS 2) Add an iptables rule to drop incoming FIN packets for CIFS 3) Unmount CIFS 4) Unload the CIFS
 module 5) Remove the iptables rule At step 3), the CIFS module calls sock_release() for the underlying TCP
 socket, and it returns quickly. However, the socket remains in FIN_WAIT_1 because incoming FIN packets are
 dropped. At this point, the module's refcnt is 0 while the socket is still alive, so the following rmmod
 command succeeds. # ss -tan State Recv-Q Send-Q Local Address:Port Peer Address:Port FIN-WAIT-1 0 477
 10.0.2.15:51062 10.0.0.137:445 # lsmod | grep cifs cifs 1159168 0 This highlights a discrepancy between
 the lifetime of the CIFS module and the underlying TCP socket. Even after CIFS calls sock_release() and it
 returns, the TCP socket does not die immediately in order to close the connection gracefully. While this
 is generally fine, it causes an issue with LOCKDEP because CIFS assigns a different lock class to the TCP
 socket's sk->sk_lock using sock_lock_init_class_and_name(). Once an incoming packet is processed for the
 socket or a timer fires, sk->sk_lock is acquired. Then, LOCKDEP checks the lock context in
 check_wait_context(), where hlock_class() is called to retrieve the lock class. However, since the module
 has already been unloaded, hlock_class() logs a warning and returns NULL, triggering the null-ptr-deref.
 If LOCKDEP is enabled, we must ensure that a module calling sock_lock_init_class_and_name() (CIFS, NFS,
 etc) cannot be unloaded while such a socket is still alive to prevent this issue. Let's hold the module
 reference in sock_lock_init_class_and_name() and release it when the socket is freed in sk_prot_free().
 Note that sock_lock_init() clears sk->sk_owner for svc_create_socket() that calls
 sock_lock_init_class_and_name() for a listening socket, which clones a socket by sk_clone_lock() without
 GFP_ZERO. [0]: CIFS_SERVER="10.0.0.137" CIFS_PATH="//${CIFS_SERVER}/Users/Administrator/Desktop/CIFS_TEST"
 DEV="enp0s3" CRED="/root/WindowsCredential.txt" MNT=$(mktemp -d /tmp/XXXXXX) mount -t cifs ${CIFS_PATH}
 ${MNT} -o vers=3.0,credentials=${CRED},cache=none,echo_interval=1 iptables -A INPUT -s ${CIFS_SERVER} -j
 DROP for i in $(seq 10); do umount ${MNT} rmmod cifs sleep 1 done rm -r ${MNT} iptables -D INPUT -s
 ${CIFS_SERVER} -j DROP [1]: DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 10 PID: 0 at kernel/locking/lockdep.c:234
 hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223) Modules linked in: cifs_arc4
 nls_ucs2_utils cifs_md4 [last unloaded: cifs] CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Not tainted 6.14.0
 #36 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
 rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:hlock_class
 (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223) ... Call Trace: <IRQ> __lock_acquire
 (kernel/locking/lockdep.c:4853 kernel/locking/lockdep.c:5178) lock_acquire (kernel/locking/lockdep.c:469
 kernel/locking/lockdep.c:5853 kernel/locking/lockdep.c:5816) _raw_spin_lock_nested
 (kernel/locking/spinlock.c:379) tcp_v4_rcv (./include/linux/skbuff.h:1678 ./include/net/tcp.h:2547
 net/ipv4/tcp_ipv4.c:2350) ... BUG: kernel NULL pointer dereference, address: 00000000000000c4 PF:
 supervisor read access in kernel mode PF: error_code(0x0000) - not-present page PGD 0 Oops: Oops: 0000
 [#1] PREEMPT SMP NOPTI CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Tainted: G W 6.14.0 #36 Tainted: [W]=WARN
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org
 04/01/2014 RIP: 0010:__lock_acquire (kernel/ ---truncated--- (CVE-2025-23143)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18613.339.97 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-117.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 472414

Version: Revision 1.1

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.44

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2025-23143

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/1/2025

Reference Information

CVE: CVE-2025-23143