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Echo: linux: security update to 6.1.176-1

high Tenable Cloud Security Plugin ID 463536

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: tls: fix strparser anchor skb
 leak on offload RX setup failure When tls_set_device_offload_rx() fails at tls_dev_add(), the error path
 calls tls_sw_free_resources_rx() to clean up the SW context that was initialized by tls_set_sw_offload().
 This function calls tls_sw_release_resources_rx() (which stops the strparser via tls_strp_stop()) and
 tls_sw_free_ctx_rx() (which kfrees the context), but never frees the anchor skb that was allocated by
 alloc_skb(0) in tls_strp_init(). Note that tls_sw_free_resources_rx() is exclusively used for this "failed
 to start offload" code path, there's no other caller. The leak did not exist before commit 84c61fe1a75b
 ("tls: rx: do not use the standard strparser"), because the standard strparser doesn't try to pre-allocate
 an skb. The normal close path in tls_sk_proto_close() handles cleanup by calling tls_sw_strparser_done()
 (which calls tls_strp_done()) after dropping the socket lock, because tls_strp_done() does
 cancel_work_sync() and the strparser work handler takes the socket lock. (CVE-2026-52974)

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-2026-52974

Plugin Details

Severity: High

ID: 463536

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-52974

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 6/25/2026

Vulnerability Publication Date: 6/3/2026

Reference Information

CVE: CVE-2026-52974