Google: sys-kernel/csql-kernel-6_1, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_1, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6, sys-kernel/tpusev-kernel-6_6: security update to 18613.731.2

high Tenable Self-Hosted Container Security Plugin ID 466127

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/sched: act_pedit: fix TOCTOU heap
OOB write in tc offload There is a TOCTOU race condition in flower lockless approach between sizing a
flow_rule buffer and filling it. [email protected] reports: The cls_flower classifier
operates with TCF_PROTO_OPS_DOIT_UNLOCKED (fl_change runs without RTNL), while RTM_NEWACTION holds RTNL,
so the independent locking domains make the race reachable in practice. KASAN confirms: BUG: KASAN: slab-
out-of-bounds in tcf_pedit_offload_act_setup+0x81b/0x930 Write of size 4 at addr ffff888001f27520 by task
poc-toctou/312 The buggy address is located 0 bytes to the right of allocated 288-byte region
[ffff888001f27400, ffff888001f27520) (cache kmalloc-512) Note: The result is a heap OOB write attacker-
controlled content into the adjacent slab object (requires CAP_NET_ADMIN). The fix introduces reading
tcfp_nkeys under act->tcfa_lock in all places using a new tcf_pedit_nkeys_locked() which replaces the old
tcf_pedit_nkeys(). Additionally we close the remaining TOCTOU window between the sizing read and the fill
reads by more careful accounting. Rather than silently truncating the key count, which leads to incorrect
action semantics offloaded to hardware and secondary OOB writes if the remaining capacity is zero or
consumed by prior actions, we enforce remaining capacity checks and return -ENOSPC if the required space
exceeds the remaining capacity. (CVE-2026-72338)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18613.731.2 or later.

Plugin Details

Severity: High

ID: 466127

Version: Revision 1.2

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.17

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-72338

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: 8/11/2026

Reference Information

CVE: CVE-2026-72338

Detections

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