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Echo: linux: security update to 6.1.164-1

high Tenable Cloud Security Plugin ID 464498

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: f2fs: fix to avoid UAF in
 f2fs_write_end_io() As syzbot reported an use-after-free issue in f2fs_write_end_io(). It is caused by
 below race condition: loop device umount - worker_thread - loop_process_work - do_req_filebacked -
 lo_rw_aio - lo_rw_aio_complete - blk_mq_end_request - blk_update_request - f2fs_write_end_io -
 dec_page_count - folio_end_writeback - kill_f2fs_super - kill_block_super - f2fs_put_super : free(sbi) :
 get_pages(, F2FS_WB_CP_DATA) accessed sbi which is freed In kill_f2fs_super(), we will drop all page
 caches of f2fs inodes before call free(sbi), it guarantee that all folios should end its writeback, so it
 should be safe to access sbi before last folio_end_writeback(). Let's relocate ckpt thread wakeup flow
 before folio_end_writeback() to resolve this issue. (CVE-2026-23234)

Solution

Update the linux library and its related packages to version 6.1.164-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-23234

Plugin Details

Severity: High

ID: 464498

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.49

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-23234

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/23/2026

Vulnerability Publication Date: 2/26/2026

Reference Information

CVE: CVE-2026-23234