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Echo: linux: security update to 6.1.176-1

medium Tenable Self-Hosted Container Security Plugin ID 459528

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: efi/capsule-loader: fix incorrect
 sizeof in phys array reallocation The krealloc() call for cap_info->phys in __efi_capsule_setup_info()
 uses sizeof(phys_addr_t *) instead of sizeof(phys_addr_t), which might be causing an undersized
 allocation. The allocation is also inconsistent with the initial array allocation in efi_capsule_open()
 that allocates one entry with sizeof(phys_addr_t), and the efi_capsule_write() function that stores
 phys_addr_t values (not pointers) via page_to_phys(). On 64-bit systems where sizeof(phys_addr_t) ==
 sizeof(phys_addr_t *), this goes unnoticed. On 32-bit systems with PAE where phys_addr_t is 64-bit but
 pointers are 32-bit, this allocates half the required space, which might lead to a heap buffer overflow
 when storing physical addresses. This is similar to the bug fixed in commit fccfa646ef36 ("efi/capsule-
 loader: fix incorrect allocation size") which fixed the same issue at the initial allocation site.
 (CVE-2026-53047)

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-2026-53047

Plugin Details

Severity: Medium

ID: 459528

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-53047

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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-2026-53047