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Echo: coreutils: security update to 9.7-3

low Tenable Self-Hosted Container Security Plugin ID 463378

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during
 buffer allocation when processing large tab stop (-t) values. The multiplication used to calculate the
 allocation size can wrap around, resulting in an undersized buffer. When processing crafted input,
 subsequent writes exceed the allocated memory, leading to an out‑of‑bounds heap write. When running GNU
 coreutils unexpand with attacker-provided large tab stop (-t) arguments, this behavior leads to a crash
 and potentially achieve a heap write primitive depending on memory layout. This issue has been fixed in
 the commit b60a159fdc5bfcf9988d3a4cb6f53abe8ad5d35d (CVE-2026-56392)

Solution

Update the coreutils library and its related packages to version 9.7-3 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-56392

Plugin Details

Severity: Low

ID: 463378

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.46

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-56392

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Low

Base Score: 1.8

Threat Score: 0.2

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/25/2026

Vulnerability Publication Date: 7/24/2026

Reference Information

CVE: CVE-2026-56392