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Echo: linux: security update to 6.1.147-1

high Tenable Cloud Security Plugin ID 464396

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: smb: client: fix use-after-free in
 crypt_message when using async crypto The CVE-2024-50047 fix removed asynchronous crypto handling from
 crypt_message(), assuming all crypto operations are synchronous. However, when hardware crypto
 accelerators are used, this can cause use-after-free crashes: crypt_message() // Allocate the creq buffer
 containing the req creq = smb2_get_aead_req(..., &req); // Async encryption returns -EINPROGRESS
 immediately rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req); // Free creq while async
 operation is still in progress kvfree_sensitive(creq, ...); Hardware crypto modules often implement async
 AEAD operations for performance. When crypto_aead_encrypt/decrypt() returns -EINPROGRESS, the operation
 completes asynchronously. Without crypto_wait_req(), the function immediately frees the request buffer,
 leading to crashes when the driver later accesses the freed memory. This results in a use-after-free
 condition when the hardware crypto driver later accesses the freed request structure, leading to kernel
 crashes with NULL pointer dereferences. The issue occurs because crypto_alloc_aead() with mask=0 doesn't
 guarantee synchronous operation. Even without CRYPTO_ALG_ASYNC in the mask, async implementations can be
 selected. Fix by restoring the async crypto handling: - DECLARE_CRYPTO_WAIT(wait) for completion tracking
 - aead_request_set_callback() for async completion notification - crypto_wait_req() to wait for operation
 completion This ensures the request buffer isn't freed until the crypto operation completes, whether
 synchronous or asynchronous, while preserving the CVE-2024-50047 fix. (CVE-2025-38488)

Solution

Update the linux library and its related packages to version 6.1.147-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-38488

Plugin Details

Severity: High

ID: 464396

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.16

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-2025-38488

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: 9/15/2025

Reference Information

CVE: CVE-2025-38488