Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.224.80

medium Tenable Self-Hosted Container Security Plugin ID 469646

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: bpf: fix mm lifecycle in open-coded
 task_vma iterator The open-coded task_vma iterator reads task->mm locklessly and acquires
 mmap_read_trylock() but never calls mmget(). If the task exits concurrently, the mm_struct can be freed as
 it is not SLAB_TYPESAFE_BY_RCU, resulting in a use-after-free. Safely read task->mm with a trylock on
 alloc_lock and acquire an mm reference. Drop the reference via bpf_iter_mmput_async() in _destroy() and
 error paths. bpf_iter_mmput_async() is a local wrapper around mmput_async() with a fallback to mmput() on
 !CONFIG_MMU. Reject irqs-disabled contexts (including NMI) up front. Operations used by _next() and
 _destroy() (mmap_read_unlock, bpf_iter_mmput_async) take spinlocks with IRQs disabled (pool->lock,
 pi_lock). Running from NMI or from a tracepoint that fires with those locks held could deadlock. A trylock
 on alloc_lock is used instead of the blocking task_lock() (get_task_mm) to avoid a deadlock when a softirq
 BPF program iterates a task that already holds its alloc_lock on the same CPU. (CVE-2026-53085)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.224.80 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-129.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 469646

Version: Revision 1.6

Type: Local

Published: 10/3/2026

Updated: 10/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.02

Vendor

Vendor Severity: HIGH

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-2026-53085

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.6

Vector: CVSS:3.0/AV:L/AC:H/PR:H/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: 6/22/2026

Reference Information

CVE: CVE-2026-53085