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Google: sys-kernel/csql-kernel-6_1, sys-kernel/lakitu-kernel-6_1: security update to 18244.382.3

high Tenable Cloud Security Plugin ID 450886

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 OOB read when checking
 dotdot dir Mounting a corrupted filesystem with directory which contains '.' dir entry with rec_len ==
 block size results in out-of-bounds read (later on, when the corrupted directory is removed).
 ext4_empty_dir() assumes every ext4 directory contains at least '.' and '..' as directory entries in the
 first data block. It first loads the '.' dir entry, performs sanity checks by calling
 ext4_check_dir_entry() and then uses its rec_len member to compute the location of '..' dir entry (in
 ext4_next_entry). It assumes the '..' dir entry fits into the same data block. If the rec_len of '.' is
 precisely one block (4KB), it slips through the sanity checks (it is considered the last directory entry
 in the data block) and leaves "struct ext4_dir_entry_2 *de" point exactly past the memory slot allocated
 to the data block. The following call to ext4_check_dir_entry() on new value of de then dereferences this
 pointer which results in out-of-bounds mem access. Fix this by extending __ext4_check_dir_entry() to check
 for '.' dir entries that reach the end of data block. Make sure to ignore the phony dir entries for
 checksum (by checking name_len for non-zero). Note: This is reported by KASAN as use-after-free in case
 another structure was recently freed from the slot past the bound, but it is really an OOB read. This
 issue was found by syzkaller tool. Call Trace: [ 38.594108] BUG: KASAN: slab-use-after-free in
 __ext4_check_dir_entry+0x67e/0x710 [ 38.594649] Read of size 2 at addr ffff88802b41a004 by task syz-
 executor/5375 [ 38.595158] [ 38.595288] CPU: 0 UID: 0 PID: 5375 Comm: syz-executor Not tainted 6.14.0-rc7
 #1 [ 38.595298] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
 rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.595304] Call Trace: [ 38.595308] <TASK> [
 38.595311] dump_stack_lvl+0xa7/0xd0 [ 38.595325] print_address_description.constprop.0+0x2c/0x3f0 [
 38.595339] ? __ext4_check_dir_entry+0x67e/0x710 [ 38.595349] print_report+0xaa/0x250 [ 38.595359] ?
 __ext4_check_dir_entry+0x67e/0x710 [ 38.595368] ? kasan_addr_to_slab+0x9/0x90 [ 38.595378]
 kasan_report+0xab/0xe0 [ 38.595389] ? __ext4_check_dir_entry+0x67e/0x710 [ 38.595400]
 __ext4_check_dir_entry+0x67e/0x710 [ 38.595410] ext4_empty_dir+0x465/0x990 [ 38.595421] ?
 __pfx_ext4_empty_dir+0x10/0x10 [ 38.595432] ext4_rmdir.part.0+0x29a/0xd10 [ 38.595441] ?
 __dquot_initialize+0x2a7/0xbf0 [ 38.595455] ? __pfx_ext4_rmdir.part.0+0x10/0x10 [ 38.595464] ?
 __pfx___dquot_initialize+0x10/0x10 [ 38.595478] ? down_write+0xdb/0x140 [ 38.595487] ?
 __pfx_down_write+0x10/0x10 [ 38.595497] ext4_rmdir+0xee/0x140 [ 38.595506] vfs_rmdir+0x209/0x670 [
 38.595517] ? lookup_one_qstr_excl+0x3b/0x190 [ 38.595529] do_rmdir+0x363/0x3c0 [ 38.595537] ?
 __pfx_do_rmdir+0x10/0x10 [ 38.595544] ? strncpy_from_user+0x1ff/0x2e0 [ 38.595561]
 __x64_sys_unlinkat+0xf0/0x130 [ 38.595570] do_syscall_64+0x5b/0x180 [ 38.595583]
 entry_SYSCALL_64_after_hwframe+0x76/0x7e (CVE-2025-37785)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18244.382.3 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-113.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 450886

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.06

Vendor

Vendor Severity: HIGH

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-2025-37785

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: 4/18/2025

Reference Information

CVE: CVE-2025-37785