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Echo: linux: security update to 6.12.88-1

medium Tenable Cloud Security Plugin ID 460881

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: af_key: zero aligned sockaddr
 tail in PF_KEY exports PF_KEY export paths use `pfkey_sockaddr_size()` when reserving sockaddr payload
 space, so IPv6 addresses occupy 32 bytes on the wire. However, `pfkey_sockaddr_fill()` initializes only
 the first 28 bytes of `struct sockaddr_in6`, leaving the final 4 aligned bytes uninitialized. Not every
 PF_KEY message is affected. The state and policy dump builders already zero the whole message buffer
 before filling the sockaddr payloads. Keep the fix to the export paths that still append aligned sockaddr
 payloads with plain `skb_put()`: - `SADB_ACQUIRE` - `SADB_X_NAT_T_NEW_MAPPING` - `SADB_X_MIGRATE` Fix
 those paths by clearing only the aligned sockaddr tail after `pfkey_sockaddr_fill()`. (CVE-2026-43088)

Solution

Update the linux library and its related packages to version 6.12.88-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-43088

Plugin Details

Severity: Medium

ID: 460881

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-2026-43088

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: 5/16/2026

Vulnerability Publication Date: 5/6/2026

Reference Information

CVE: CVE-2026-43088