Echo: linux: security update to 6.1.159-1

high Tenable Cloud Security Plugin ID 459298

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: sctp: prevent possible shift-out-of-
bounds in sctp_transport_update_rto syzbot reported a possible shift-out-of-bounds [1] Blamed commit added
rto_alpha_max and rto_beta_max set to 1000. It is unclear if some sctp users are setting very large
rto_alpha and/or rto_beta. In order to prevent user regression, perform the test at run time. Also add
READ_ONCE() annotations as sysctl values can change under us. [1] UBSAN: shift-out-of-bounds in
net/sctp/transport.c:509:41 shift exponent 64 is too large for 32-bit type 'unsigned int' CPU: 0 UID: 0
PID: 16704 Comm: syz.2.2320 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute
Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94
[inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:233 [inline]
__ubsan_handle_shift_out_of_bounds+0x27f/0x420 lib/ubsan.c:494 sctp_transport_update_rto.cold+0x1c/0x34b
net/sctp/transport.c:509 sctp_check_transmitted+0x11c4/0x1c30 net/sctp/outqueue.c:1502
sctp_outq_sack+0x4ef/0x1b20 net/sctp/outqueue.c:1338 sctp_cmd_process_sack net/sctp/sm_sideeffect.c:840
[inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1372 [inline] (CVE-2025-40281)

Solution

Update the linux library and its related packages to version 6.1.159-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-40281

Plugin Details

Severity: High

ID: 459298

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.48

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

CVSS Score Source: CVE-2025-40281

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/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: 12/7/2025

Vulnerability Publication Date: 12/6/2025

Reference Information

CVE: CVE-2025-40281