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 Cloud Security Plugin ID 466310

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: binfmt_misc: reject a flag character
as the field delimiter The registration string starts with a user chosen delimiter that separates the
individual fields. So that the field parsers terminate even on a truncated string create_entry() pads the
buffer with that same delimiter: memset(buf + count, del, 8); Most fields are scanned for the delimiter
with strchr()/scanarg() and happily stop on the padding. The flags field is different: instead of scanning
for the delimiter check_special_flags() consumes the flag characters 'P', 'O', 'C' and 'F' and stops at
the first byte that is none of them, relying on the trailing delimiter to end the scan. If the delimiter
is itself a flag character the padding no longer acts as a terminator. The scan swallows all eight padding
bytes and keeps reading past the end of the allocation until it hits a byte that is not a flag character.
For example registering PaPEPPxPPiP with 'P' as the delimiter (name "a", type extension, magic "x",
interpreter "i", empty flags) leaves the flag scan running off the end of the buffer. The registration is
rejected in the end because the parser does not stop exactly at buf + count, but only after the out of
bounds read has already happened. With an unlucky allocation layout the scan can walk into an unmapped
page; under KASAN it is reported as a slab out of bounds read. binfmt_misc mounts are available to
unprivileged users in a user namespace so the read is reachable without privileges. Reject a delimiter
that is one of the flag characters up front. Such a registration was always rejected anyway, only after
the out of bounds read, so no valid registration string changes meaning. (CVE-2026-74485)

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: 466310

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.44

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-74485

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/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: 8/11/2026

Reference Information

CVE: CVE-2026-74485

Detections

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