AUGUST 24, 2026
Live Feed
Back to database
Case File

CVE-2026-56289

MEDIUM · CVSS 5.5 EPSS 0.11%

Source: NVD + CISA KEV + EPSS · Published 2026-07-09 · Last synced 2026-08-08

CyberRota Analysis

AI-Generated

GNU patch is vulnerable to a denial of service (DoS) due to improper validation of line offsets in unified-diff input, allowing attackers to exploit this flaw by providing a specially crafted patch file. This can lead to excessive CPU consumption and cause the application to become unresponsive, requiring manual termination. Users of GNU patch, particularly those in environments where patch files are processed from untrusted sources, should prioritize applying the fix to mitigate potential disruptions.

CVE
CVE-2026-56289
Severity
MEDIUM
CVSS
5.5
EPSS
0.11%

Original NVD Description

GNU patch is vulnerable to a denial of service (DoS) due to improper validation of hunk (single block of changes in diff) line offsets in unified-diff input. A specially crafted patch can specify an extremely large line number, causing the application to enter an effectively infinite processing loop while attempting to locate the requested position. This results in excessive CPU consumption and prevents the process from completing. An attacker can trigger this behavior by supplying a malicious patch file, causing the utility to become unresponsive and require manual termination. This issue has been fixed in the commit faba04ef4f2b410257f76c1b9dc85e350929c4b9

Related CVEs

Other vulnerabilities affecting the same vendor(s)