MEDIUM 5.5 Microsoft
CVE-2019-20633
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.
Microsoft Security Update 2026-Aug: 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.
Affected Products
- azl3 patch 2.7.6-9 on Azure Linux 3.0
- azl3 patch 2.7.6-10 on Azure Linux 3.0
- cm1 patch 2.7.6-7 on CBL Mariner 1.0
- cbl2 patch 2.7.6-8 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-20633
- https://nvd.nist.gov/vuln/detail/CVE-2019-20633
This medium severity vulnerability with a CVSS score of 5.5 was published on 2026-08-06 via Microsoft. Affected: azl3 patch 2.7.6-9 on Azure Linux 3.0, azl3 patch 2.7.6-10 on Azure Linux 3.0, cm1 patch 2.7.6-7 on CBL Mariner 1.0 and 1 more.
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