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Echo: linux: security update to 6.1.176-1

critical Tenable Cloud Security Plugin ID 457685

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: ksmbd: fix use-after-free from async
 crypto on Qualcomm crypto engine ksmbd_crypt_message() sets a NULL completion callback on AEAD requests
 and does not handle the -EINPROGRESS return code from async hardware crypto engines like the Qualcomm
 Crypto Engine (QCE). When QCE returns -EINPROGRESS, ksmbd treats it as an error and immediately frees the
 request while the hardware DMA operation is still in flight. The DMA completion callback then dereferences
 freed memory, causing a NULL pointer crash: pc : qce_skcipher_done+0x24/0x174 lr :
 vchan_complete+0x230/0x27c ... el1h_64_irq+0x68/0x6c ksmbd_free_work_struct+0x20/0x118 [ksmbd]
 ksmbd_exit_file_cache+0x694/0xa4c [ksmbd] Use the standard crypto_wait_req() pattern with
 crypto_req_done() as the completion callback, matching the approach used by the SMB client in
 fs/smb/client/smb2ops.c. This properly handles both synchronous engines (immediate return) and async
 engines (-EINPROGRESS followed by callback notification). (CVE-2026-53046)

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-2026-53046

Plugin Details

Severity: Critical

ID: 457685

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.02

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-53046

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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-2026-53046