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Echo: patch: security update to 2.8-2+e4

medium Tenable Self-Hosted Container Security Plugin ID 465012

Description

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

 - GNU patch is vulnerable to a NULL pointer dereference when processing a specially crafted unified-diff
 patch file. Improper handling of consecutive end-of-file newline markers can corrupt internal hunk (single
 block of changes in diff) data structures, causing the application to pass a NULL pointer to fwrite()
 during patch processing. An attacker can trigger this condition with a malicious patch file, causing the
 utility to crash and resulting in a denial of service. This issue has been fixed in the commit
 e6d6a4e021660679d7fc9150f981d4920f722313 (CVE-2026-56288)

Solution

Update the patch library and its related packages to version 2.8-2+e4 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-56288

Plugin Details

Severity: Medium

ID: 465012

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

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-2026-56288

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

CVSS v4

Risk Factor: Medium

Base Score: 4.6

Threat Score: 1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/10/2026

Vulnerability Publication Date: 7/9/2026

Reference Information

CVE: CVE-2026-56288