{"id":"CVE-2022-50329","revision":"7008dee94562463fb13585155a74cd70","records":[{"revision":"7008dee94562463fb13585155a74cd70","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2022-50329","aliases":[],"title":"block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq\n\nCommit 64dc8c732f5c (\"block, bfq: fix possible uaf for 'bfqq->bic'\")\nwill access 'bic->bfqq' in bic_set_bfqq(), however, bfq_exit_icq_bfqq()\ncan free bfqq first, and then call bic_set_bfqq(), which will cause uaf.\n\nFix the problem by moving bfq_exit_bfqq() behind bic_set_bfqq().","state":0,"publishedAt":"2025-09-15T14:49:32.123+00:00","modifiedAt":"2026-10-15T21:31:20.243+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                        \"block/bfq-iosched.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a\",\n                            \"lessThan\": \"1425f1bb5df5239021fd09ebc2a5e8070e705d36\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"094f3d9314d67691cb21ba091c1b528f6e3c4893\",\n                            \"lessThan\": \"7949b0df3dd9f4817ed4a4e989fa9ee81df6205f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b22fd72bfebda3956efc4431b60ddfc0a51e03e0\",\n                            \"lessThan\": \"cfe5b38c37720313eff0dec5517442c7ab3c9a20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"761564d93c8265f65543acf0a576b32d66bfa26a\",\n                            \"lessThan\": \"1ed959fef5b1c6f1a7a3fbea543698c30ebd6678\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"64dc8c732f5c2b406cc752e6aaa1bd5471159cab\",\n                            \"lessThan\": \"246cf66e300b76099b5dbd3fdd39e9a5dbc53f02\",\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\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"block/bfq-iosched.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.15.86\",\n                            \"lessThan\": \"5.15.87\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.0.16\",\n                            \"lessThan\": \"6.0.17\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.2\",\n                            \"lessThan\": \"6.1.3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/1425f1bb5df5239021fd09ebc2a5e8070e705d36","https://git.kernel.org/stable/c/7949b0df3dd9f4817ed4a4e989fa9ee81df6205f","https://git.kernel.org/stable/c/cfe5b38c37720313eff0dec5517442c7ab3c9a20","https://git.kernel.org/stable/c/1ed959fef5b1c6f1a7a3fbea543698c30ebd6678","https://git.kernel.org/stable/c/246cf66e300b76099b5dbd3fdd39e9a5dbc53f02"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50329","license":"CVE Program Terms of Use","key":"cve-program:CVE-2022-50329","identifiers":["CVE-2022-50329"]},"retained":false,"historicalAffected":[]}],"coverage":[]}