Detections
Analytics

Echo: linux: security update to 6.1.170-1

critical Tenable Cloud Security Plugin ID 463537

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: batman-adv: hold claim backbone
 gateways by reference batadv_bla_add_claim() can replace claim->backbone_gw and drop the old gateway's
 last reference while readers still follow the pointer. The netlink claim dump path dereferences
 claim->backbone_gw->orig and takes claim->backbone_gw->crc_lock without pinning the underlying backbone
 gateway. batadv_bla_check_claim() still has the same naked pointer access pattern. Reuse
 batadv_bla_claim_get_backbone_gw() in both readers so they operate on a stable gateway reference until the
 read-side work is complete. This keeps the dump and claim-check paths aligned with the lifetime rules
 introduced for the other BLA claim readers. (CVE-2026-31657)

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-2026-31657

Plugin Details

Severity: Critical

ID: 463537

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.14

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-31657

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 5/1/2026

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-31657