Google: sys-kernel/lakitu-kernel-6_1, sys-kernel/lakitu-kernel-6_6: security update to 18613.75.102

high Tenable Self-Hosted Container Security Plugin ID 465765

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: mm: resolve faulty mmap_region() error
path behaviour The mmap_region() function is somewhat terrifying, with spaghetti-like control flow and
numerous means by which issues can arise and incomplete state, memory leaks and other unpleasantness can
occur. A large amount of the complexity arises from trying to handle errors late in the process of mapping
a VMA, which forms the basis of recently observed issues with resource leaks and observable inconsistent
state. Taking advantage of previous patches in this series we move a number of checks earlier in the code,
simplifying things by moving the core of the logic into a static internal function __mmap_region(). Doing
this allows us to perform a number of checks up front before we do any real work, and allows us to unwind
the writable unmap check unconditionally as required and to perform a CONFIG_DEBUG_VM_MAPLE_TREE
validation unconditionally also. We move a number of things here: 1. We preallocate memory for the
iterator before we call the file-backed memory hook, allowing us to exit early and avoid having to perform
complicated and error-prone close/free logic. We carefully free iterator state on both success and error
paths. 2. The enclosing mmap_region() function handles the mapping_map_writable() logic early. Previously
the logic had the mapping_map_writable() at the point of mapping a newly allocated file-backed VMA, and a
matching mapping_unmap_writable() on success and error paths. We now do this unconditionally if this is a
file-backed, shared writable mapping. If a driver changes the flags to eliminate VM_MAYWRITE, however
doing so does not invalidate the seal check we just performed, and we in any case always decrement the
counter in the wrapper. We perform a debug assert to ensure a driver does not attempt to do the opposite.
3. We also move arch_validate_flags() up into the mmap_region() function. This is only relevant on arm64
and sparc64, and the check is only meaningful for SPARC with ADI enabled. We explicitly add a warning for
this arch if a driver invalidates this check, though the code ought eventually to be fixed to eliminate
the need for this. With all of these measures in place, we no longer need to explicitly close the VMA on
error paths, as we place all checks which might fail prior to a call to any driver mmap hook. This
eliminates an entire class of errors, makes the code easier to reason about and more robust.
(CVE-2024-53096)

Solution

Update the sys-kernel/lakitu-kernel-6_1 library and its related packages to version 18613.75.102 or later.

Plugin Details

Severity: High

ID: 465765

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 97.36

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2024-53096

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 11/25/2024

Reference Information

CVE: CVE-2024-53096

Detections

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