PT-2020-10609 · Gnu+2 · Gnu Patch+2

Manh-Dung Nguyen + 1 · Published 2018-06-08 · Updated 2026-04-01 · CVE-2019-20633

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions GNU patch versions prior to 2.7.7

Description The issue is related to a Double Free vulnerability in the another hunk function in pch.c, which can cause a denial of service via a crafted patch file.

Recommendations For GNU patch versions prior to 2.7.7, update to version 2.7.7 or later to resolve the issue.

Exploit

Fix

DoS

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

ALT-PU-2018-1872

AZL-35107

AZL-6791

CLEANSTART-2026-NA21773

CLEANSTART-2026-PM79547

CVE-2019-20633

OPENSUSE-SU-2024:14239-1

ROSA-SA-2024-2468

SUSE-SU-2024:2704-1

SUSE-SU-2024:2780-1

SUSE-SU-2024_2704-1

SUSE-SU-2024_2780-1

SUSE-SU-2025:20075-1

Affected Products

Alt Linux

Gnu Patch

Suse

References · 35

• 🔥 https://savannah.gnu.org/bugs/index.php?56683 · Exploit
• https://osv.dev/vulnerability/CLEANSTART-2026-PM79547 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-20633 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-13636 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-6952 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2704-1 · Vendor Advisory
• https://osv.dev/vulnerability/CLEANSTART-2026-NA21773 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-20633 · Security Note
• https://osv.dev/vulnerability/AZL-6791 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20075-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:14239-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2780-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-20633 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20969 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-20633 · Vendor Advisory