Google: sys-kernel/lakitu-kernel-6_1, sys-kernel/lakitu-kernel-6_6: security update to 18613.75.4

medium Tenable Cloud Security Plugin ID 465891

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: ext4: update orig_path in
ext4_find_extent() In ext4_find_extent(), if the path is not big enough, we free it and set *orig_path to
NULL. But after reallocating and successfully initializing the path, we don't update *orig_path, in which
case the caller gets a valid path but a NULL ppath, and this may cause a NULL pointer dereference or a
path memory leak. For example: ext4_split_extent path = *ppath = 2000 ext4_find_extent if (depth >
path[0].p_maxdepth) kfree(path = 2000); *orig_path = path = NULL; path = kcalloc() = 3000
ext4_split_extent_at(*ppath = NULL) path = *ppath; ex = path[depth].p_ext; // NULL pointer dereference!
================================================================== BUG: kernel NULL pointer dereference,
address: 0000000000000010 CPU: 6 UID: 0 PID: 576 Comm: fsstress Not tainted 6.11.0-rc2-dirty #847 RIP:
0010:ext4_split_extent_at+0x6d/0x560 Call Trace: <TASK> ext4_split_extent.isra.0+0xcb/0x1b0
ext4_ext_convert_to_initialized+0x168/0x6c0 ext4_ext_handle_unwritten_extents+0x325/0x4d0
ext4_ext_map_blocks+0x520/0xdb0 ext4_map_blocks+0x2b0/0x690 ext4_iomap_begin+0x20e/0x2c0 [...]
================================================================== Therefore, *orig_path is updated when
the extent lookup succeeds, so that the caller can safely use path or *ppath. (CVE-2024-49881)

Solution

Update the sys-kernel/lakitu-kernel-6_1 library and its related packages to version 18613.75.4 or later.

Plugin Details

Severity: Medium

ID: 465891

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2024-49881

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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: 12/12/2023

Reference Information

CVE: CVE-2024-49881

Detections

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