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Echo: linux: security update to 6.12.94-1

medium Tenable Cloud Security Plugin ID 461610

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: bridge: mrp: reject zero test interval
 to avoid OOM panic br_mrp_start_test() and br_mrp_start_in_test() accept the user-supplied interval value
 from netlink without validation. When interval is 0, usecs_to_jiffies(0) yields 0, causing the delayed
 work (br_mrp_test_work_expired / br_mrp_in_test_work_expired) to reschedule itself with zero delay. This
 creates a tight loop on system_percpu_wq that allocates and transmits MRP test frames at maximum rate,
 exhausting all system memory and causing a kernel panic via OOM deadlock. The same zero-interval issue
 applies to br_mrp_start_in_test_parse() for interconnect test frames. Use NLA_POLICY_MIN(NLA_U32, 1) in
 the nla_policy tables for both IFLA_BRIDGE_MRP_START_TEST_INTERVAL and
 IFLA_BRIDGE_MRP_START_IN_TEST_INTERVAL, so zero is rejected at the netlink attribute parsing layer before
 the value ever reaches the workqueue scheduling code. This is consistent with how other bridge subsystems
 (br_fdb, br_mst) enforce range constraints on netlink attributes. (CVE-2026-31420)

Solution

Update the linux library and its related packages to version 6.12.94-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-31420

Plugin Details

Severity: Medium

ID: 461610

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.44

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-2026-31420

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: 4/15/2026

Vulnerability Publication Date: 4/13/2026

Reference Information

CVE: CVE-2026-31420