Google: sys-kernel/csql-kernel-6_1, sys-kernel/lakitu-kernel-6_1: security update to 18244.85.5

medium Tenable Cloud Security Plugin ID 450497

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: fix corruption during on-line
resize We observed a corruption during on-line resize of a file system that is larger than 16 TiB with 4k
block size. With having more then 2^32 blocks resize_inode is turned off by default by mke2fs. The issue
can be reproduced on a smaller file system for convenience by explicitly turning off resize_inode. An on-
line resize across an 8 GiB boundary (the size of a meta block group in this setup) then leads to a
corruption: dev=/dev/<some_dev> # should be >= 16 GiB mkdir -p /corruption /sbin/mke2fs -t ext4 -b 4096 -O
^resize_inode $dev $((2 * 2**21 - 2**15)) mount -t ext4 $dev /corruption dd if=/dev/zero bs=4096
of=/corruption/test count=$((2*2**21 - 4*2**15)) sha1sum /corruption/test #
79d2658b39dcfd77274e435b0934028adafaab11 /corruption/test /sbin/resize2fs $dev $((2*2**21)) # drop page
cache to force reload the block from disk echo 1 > /proc/sys/vm/drop_caches sha1sum /corruption/test #
3c2abc63cbf1a94c9e6977e0fbd72cd832c4d5c3 /corruption/test 2^21 = 2^15*2^6 equals 8 GiB whereof 2^15 is the
number of blocks per block group and 2^6 are the number of block groups that make a meta block group. The
last checksum might be different depending on how the file is laid out across the physical blocks. The
actual corruption occurs at physical block 63*2^15 = 2064384 which would be the location of the backup of
the meta block group's block descriptor. During the on-line resize the file system will be converted to
meta_bg starting at s_first_meta_bg which is 2 in the example - meaning all block groups after 16 GiB.
However, in ext4_flex_group_add we might add block groups that are not part of the first meta block group
yet. In the reproducer we achieved this by substracting the size of a whole block group from the point
where the meta block group would start. This must be considered when updating the backup block group
descriptors to follow the non-meta_bg layout. The fix is to add a test whether the group to add is already
part of the meta block group or not. (CVE-2024-35807)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18244.85.5 or later.

Plugin Details

Severity: Medium

ID: 450497

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

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-2024-35807

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-2024-35807

Detections

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