{"id":"CVE-2022-36227","title":"In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference","summary":"In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE: the discoverer cites…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-476"],"vendor":"libarchive","product":"libarchive","affected":["libarchive >= 3.0.0, < 3.6.2","debian_linux = 10.0","fedora = 37","universal_forwarder >= 8.2.0, < 8.2.12","universal_forwarder >= 9.0.0, < 9.0.6","universal_forwarder = 9.1.0"],"patched":["libarchive 3.6.2","universal_forwarder 9.0.6"],"published":"2022-11-22","updated":"2026-10-08","sourceUpdated":"2026-10-08T21:17:48.930","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-36227","references":[{"url":"https://bugs.gentoo.org/882521","label":"cve@mitre.org"},{"url":"https://github.com/libarchive/libarchive/blob/v3.0.0a/libarchive/archive_write.c#L215","label":"cve@mitre.org"},{"url":"https://github.com/libarchive/libarchive/issues/1754","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2023/01/msg00034.html","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V67OO2UUQAUJS3IK4JZPF6F3LUCBU6IS/","label":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/202309-14","label":"cve@mitre.org"},{"url":"https://bugs.gentoo.org/882521","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libarchive/libarchive/blob/v3.0.0a/libarchive/archive_write.c#L215","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libarchive/libarchive/issues/1754","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2023/01/msg00034.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/11/msg00007.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V67OO2UUQAUJS3IK4JZPF6F3LUCBU6IS/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202309-14","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.02445,"epssPercentile":0.83854,"ingestedAt":"2026-10-08T22:11:53.759Z","slug":"CVE-2022-36227","body":"## Overview\n\nIn libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE: the discoverer cites this CWE-476 remark but third parties dispute the code-execution impact: \"In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.\"\n\n## Affected\n\n- `libarchive >= 3.0.0, < 3.6.2`\n- `debian_linux = 10.0`\n- `fedora = 37`\n- `universal_forwarder >= 8.2.0, < 8.2.12`\n- `universal_forwarder >= 9.0.0, < 9.0.6`\n- `universal_forwarder = 9.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `libarchive 3.6.2`\n- `universal_forwarder 9.0.6`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.5,"exploitation":0,"ransomware":0},"changes":[]}