{"id":"CVE-2022-50746","revision":"07634877ac6e40f990a5e064b0961c5c","records":[{"revision":"07634877ac6e40f990a5e064b0961c5c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2022-50746","aliases":[],"title":"erofs: validate the extent length for uncompressed pclusters","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: validate the extent length for uncompressed pclusters\n\nsyzkaller reported a KASAN use-after-free:\nhttps://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2\n\nThe referenced fuzzed image actually has two issues:\n - m_pa == 0 as a non-inlined pcluster;\n - The logical length is longer than its physical length.\n\nThe first issue has already been addressed.  This patch addresses\nthe second issue by checking the extent length validity.","state":0,"publishedAt":"2025-12-24T13:05:42.628+00:00","modifiedAt":"2026-10-15T21:41:23.468+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/erofs/zmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"02827e1796b33f1794966f5c3101f8da2dfa9c1d\",\n                            \"lessThan\": \"dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"02827e1796b33f1794966f5c3101f8da2dfa9c1d\",\n                            \"lessThan\": \"40c73b2ea9611b5388807be406f30f5e4e1162da\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"02827e1796b33f1794966f5c3101f8da2dfa9c1d\",\n                            \"lessThan\": \"c505feba4c0d76084e56ec498ce819f02a7043ae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/erofs/zmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.0.16\",\n                            \"lessThanOrEqual\": \"6.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.2\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e","https://git.kernel.org/stable/c/40c73b2ea9611b5388807be406f30f5e4e1162da","https://git.kernel.org/stable/c/c505feba4c0d76084e56ec498ce819f02a7043ae"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50746","license":"CVE Program Terms of Use","key":"cve-program:CVE-2022-50746","identifiers":["CVE-2022-50746"]},"retained":false,"historicalAffected":[]}],"coverage":[]}