Detections
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Echo: linux: security update to 6.12.16-1

medium Tenable Cloud Security Plugin ID 463887

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: io_uring/kbuf: reallocate buf lists on
 upgrade IORING_REGISTER_PBUF_RING can reuse an old struct io_buffer_list if it was created for legacy
 selected buffer and has been emptied. It violates the requirement that most of the field should stay
 stable after publish. Always reallocate it instead. (CVE-2025-21836)

Solution

Update the linux library and its related packages to version 6.12.16-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-21836

Plugin Details

Severity: Medium

ID: 463887

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

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-2025-21836

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: 9/15/2025

Vulnerability Publication Date: 3/7/2025

Reference Information

CVE: CVE-2025-21836