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Echo: linux: security update to 6.1.170-1

medium Tenable Self-Hosted Container Security Plugin ID 458246

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: net/rose: fix NULL pointer dereference
 in rose_transmit_link on reconnect syzkaller reported a bug [1], and the reproducer is available at [2].
 ROSE sockets use four sk->sk_state values: TCP_CLOSE, TCP_LISTEN, TCP_SYN_SENT, and TCP_ESTABLISHED.
 rose_connect() already rejects calls for TCP_ESTABLISHED (-EISCONN) and TCP_CLOSE with SS_CONNECTING
 (-ECONNREFUSED), but lacks a check for TCP_SYN_SENT. When rose_connect() is called a second time while the
 first connection attempt is still in progress (TCP_SYN_SENT), it overwrites rose->neighbour via
 rose_get_neigh(). If that returns NULL, the socket is left with rose->state == ROSE_STATE_1 but
 rose->neighbour == NULL. When the socket is subsequently closed, rose_release() sees ROSE_STATE_1 and
 calls rose_write_internal() -> rose_transmit_link(skb, NULL), causing a NULL pointer dereference. Per
 connect(2), a second connect() while a connection is already in progress should return -EALREADY. Add this
 missing check for TCP_SYN_SENT to complete the state validation in rose_connect(). [1]
 https://syzkaller.appspot.com/bug?extid=d00f90e0af54102fb271 [2]
 https://gist.github.com/mrpre/9e6779e0d13e2c66779b1653fef80516 (CVE-2026-23460)

Solution

Update the linux library and its related packages to version 6.1.170-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-23460

Plugin Details

Severity: Medium

ID: 458246

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

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-2026-23460

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

Patch Publication Date: 5/1/2026

Vulnerability Publication Date: 4/3/2026

Reference Information

CVE: CVE-2026-23460