Detections
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Echo: linux: security update to 6.1.176-1

high Tenable Cloud Security Plugin ID 457440

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: Bluetooth: MGMT: validate advertising
 TLV before type checks tlv_data_is_valid() reads each advertising data field length from data[i], then
 inspects data[i + 1] for managed EIR types before checking that the current field still fits inside the
 supplied buffer. A malformed field whose length byte is the last byte of the buffer can therefore make the
 parser read one byte past the advertising data. KASAN reported the following when a malformed
 MGMT_OP_ADD_ADVERTISING request reached that path: BUG: KASAN: vmalloc-out-of-bounds in
 tlv_data_is_valid() Read of size 1 Call trace: tlv_data_is_valid() add_advertising() hci_mgmt_cmd()
 hci_sock_sendmsg() Move the existing element-length check before any type-octet inspection so each non-
 empty element is proven to contain its type byte before the parser looks at data[i + 1]. (CVE-2026-53255)

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-2026-53255

Plugin Details

Severity: High

ID: 457440

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-53255

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 6/25/2026

Reference Information

CVE: CVE-2026-53255