{"id":"CVE-2023-52774","summary":"s390/dasd: protect device queue against concurrent access","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: protect device queue against concurrent access\n\nIn dasd_profile_start() the amount of requests on the device queue are\ncounted. The access to the device queue is unprotected against\nconcurrent access. With a lot of parallel I/O, especially with alias\ndevices enabled, the device queue can change while dasd_profile_start()\nis accessing the queue. In the worst case this leads to a kernel panic\ndue to incorrect pointer accesses.\n\nFix this by taking the device lock before accessing the queue and\ncounting the requests. Additionally the check for a valid profile data\npointer can be done earlier to avoid unnecessary locking in a hot path.","modified":"2026-03-20T12:32:46.652302Z","published":"2024-05-21T15:30:55.593Z","related":["SUSE-SU-2024:1979-1","SUSE-SU-2024:1983-1","SUSE-SU-2024:2008-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2019-1","SUSE-SU-2024:2184-1","SUSE-SU-2024:2189-1","SUSE-SU-2024:2190-1","SUSE-SU-2024:2571-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52774.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c841de6247e94e07566d57163d3c0d8b29278f7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db46cd1e0426f52999d50fa72cfa97fa39952885"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f75617cc8df4155374132f0b500b0b3ebb967458"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52774.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52774"},{"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":"4fa52aa7a82f9226b3874a69816bda3af821f002"},{"fixed":"ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f"},{"fixed":"f75617cc8df4155374132f0b500b0b3ebb967458"},{"fixed":"f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d"},{"fixed":"c841de6247e94e07566d57163d3c0d8b29278f7a"},{"fixed":"6062c527d0403cef27c54b91ac8390c3a497b250"},{"fixed":"dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be"},{"fixed":"9372aab5d0ff621ea203c8c603e7e5f75e888240"},{"fixed":"db46cd1e0426f52999d50fa72cfa97fa39952885"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52774.json"}}],"schema_version":"1.7.5"}