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Echo: linux: security update to 6.1.176-1

high Tenable Self-Hosted Container Security Plugin ID 465238

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: netfilter: nf_queue: hold bridge
 skb->dev while queued br_pass_frame_up() rewrites skb->dev from the ingress port to the bridge master
 before queueing bridge LOCAL_IN packets. NFQUEUE only holds references on state.in/out and bridge
 physdevs, so a queued bridge packet can retain a freed bridge master in skb->dev until reinjection. When
 the verdict is reinjected later, br_netif_receive_skb() re-enters the receive path with skb->dev still
 pointing at the freed bridge master, triggering a use-after-free. Store skb->dev in the queue entry, hold
 a reference on it for the queue lifetime, and use the saved device when dropping queued packets during
 NETDEV_DOWN handling. (CVE-2026-52912)

Solution

Update the linux library and its related packages to version 6.1.176-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-52912

Plugin Details

Severity: High

ID: 465238

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.6

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-2026-52912

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: 6/25/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-52912