{"id":"CVE-2023-52646","summary":"aio: fix mremap after fork null-deref","details":"In the Linux kernel, the following vulnerability has been resolved:\n\naio: fix mremap after fork null-deref\n\nCommit e4a0d3e720e7 (\"aio: Make it possible to remap aio ring\") introduced\na null-deref if mremap is called on an old aio mapping after fork as\nmm-\u003eioctx_table will be set to NULL.\n\n[jmoyer@redhat.com: fix 80 column issue]","modified":"2026-04-02T09:43:10.644653Z","published":"2024-04-26T12:19:32.167Z","related":["SUSE-SU-2024:1643-1","SUSE-SU-2024:1644-1","SUSE-SU-2024:1646-1","SUSE-SU-2024:1870-1","SUSE-SU-2024:1983-1","SUSE-SU-2024:2008-1","SUSE-SU-2024:2184-1","SUSE-SU-2024:2190-1","SUSE-SU-2025:0834-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52646.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/178993157e8c50aef7f35d7d6d3b44bb428199e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95"},{"type":"WEB","url":"https://git.kernel.org/stable/c/81e9d6f8647650a7bead74c5f926e29970e834d1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/af126acf01a12bdb04986fd26fc2eb3b40249e0d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c261f798f7baa8080cf0214081d43d5f86bb073f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d8dca1bfe9adcae38b35add64977818c0c13dd22"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52646.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52646"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e4a0d3e720e7e508749c1439b5ba3aff56c92976"},{"fixed":"808f1e4b5723ae4eda724d2ad6f6638905eefd95"},{"fixed":"d8dca1bfe9adcae38b35add64977818c0c13dd22"},{"fixed":"4326d0080f7e84fba775da41d158f46cf9d3f1c2"},{"fixed":"c261f798f7baa8080cf0214081d43d5f86bb073f"},{"fixed":"178993157e8c50aef7f35d7d6d3b44bb428199e1"},{"fixed":"af126acf01a12bdb04986fd26fc2eb3b40249e0d"},{"fixed":"81e9d6f8647650a7bead74c5f926e29970e834d1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52646.json"}}],"schema_version":"1.7.5"}