Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.106

medium Tenable Cloud Security Plugin ID 475646

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: Copy per-CPU map value padding in
 copy_map_value_long() In kernel, per-CPU map elements are stored with round_up(map->value_size, 8) bytes.
 On UAPI lookup paths, it copies the rounded size for each CPU into a temporary buffer. However,
 copy_map_value_long() passes 'map->value_size' to bpf_obj_memcpy(). When the map has special fields,
 bpf_obj_memcpy() copies around those fields with memcpy(), and does not copy the tail padding between
 'map->value_size' and round_up(map->value_size, 8). The temporary UAPI lookup buffers are allocated
 without __GFP_ZERO. As a result, when the per-CPU map's value size is not equal to
 round_up(map->value_size, 8), UAPI LOOKUP_ELEM and its variants can return stale heap contents from that
 padding to user space. The same issue applies to bpf_iter for per-CPU maps. Pass round_up(map->value_size,
 8) to bpf_obj_memcpy() from copy_map_value_long(), so per-CPU maps both with and without special fields
 copy the entire per-CPU slot. Remove the now redundant round_up() from bpf_obj_memcpy()'s long_memcpy
 path. (CVE-2026-93174)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19999.44.106 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-133.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 475646

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.36

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-93174

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/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: 9/17/2026

Reference Information

CVE: CVE-2026-93174