Double Free Affecting patch package, versions <2.7.6-r7


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.02% (64th percentile)

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  • Snyk IDSNYK-ALPINE318-PATCH-5513842
  • published22 Jun 2021
  • disclosed25 Mar 2020

Introduced: 25 Mar 2020

CVE-2019-20633  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade Alpine:3.18 patch to version 2.7.6-r7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream patch package and not the patch package as distributed by Alpine. See How to fix? for Alpine:3.18 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1