CVE-2019-20633

MEDIUM

GNU Patch < 2.7.6 - Double Free

Title source: rule

Description

GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file. NOTE: this issue exists because of an incomplete fix for CVE-2018-6952.

References (1)

[Exploit, Vendor Advisory] https://savannah.gnu.org/bugs/index.php?56683

Scores

CVSS v3 5.5

EPSS 0.0011

EPSS Percentile 30.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

CWE

CWE-415

Status published

Affected Products (1)

gnu/patch < 2.7.6

Timeline

Published Mar 25, 2020

Tracked Since Feb 18, 2026