{"id":"JLSEC-2026-18","details":"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.","modified":"2026-07-25T18:23:48.154676161Z","published":"2026-03-31T16:50:26.988Z","upstream":["CVE-2019-20633"],"database_specific":{"license":"CC-BY-4.0","sources":[{"database_specific":{"status":"Modified"},"id":"CVE-2019-20633","imported":"2026-07-17T21:18:17.529Z","modified":"2026-06-17T02:30:50.590Z","published":"2020-03-25T17:15:14.013Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2019-20633","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20633"}]},"references":[{"type":"WEB","url":"https://savannah.gnu.org/bugs/index.php?56683"}],"affected":[{"package":{"name":"patch_jll","ecosystem":"Julia","purl":"pkg:julia/patch_jll?uuid=c7bec4a6-5215-51fd-b0a3-64ceaaad3a34"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.8.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-18.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:M/Au:N/C:N/I:N/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}