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Echo: linux: security update to 6.12.43-1

high Tenable Cloud Security Plugin ID 460785

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: xen: fix UAF in
 dmabuf_exp_from_pages() [dma_buf_fd() fixes; no preferences regarding the tree it goes through - up to xen
 folks] As soon as we'd inserted a file reference into descriptor table, another thread could close it.
 That's fine for the case when all we are doing is returning that descriptor to userland (it's a race, but
 it's a userland race and there's nothing the kernel can do about it). However, if we follow fd_install()
 with any kind of access to objects that would be destroyed on close (be it the struct file itself or
 anything destroyed by its ->release()), we have a UAF. dma_buf_fd() is a combination of reserving a
 descriptor and fd_install(). gntdev dmabuf_exp_from_pages() calls it and then proceeds to access the
 objects destroyed on close - starting with gntdev_dmabuf itself. Fix that by doing reserving descriptor
 before anything else and do fd_install() only when everything had been set up. (CVE-2025-38595)

Solution

Update the linux library and its related packages to version 6.12.43-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-38595

Plugin Details

Severity: High

ID: 460785

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.29

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-2025-38595

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: 9/15/2025

Vulnerability Publication Date: 8/19/2025

Reference Information

CVE: CVE-2025-38595