{"id":"CVE-2025-68373","summary":"md: avoid repeated calls to del_gendisk","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: avoid repeated calls to del_gendisk\n\nThere is a uaf problem which is found by case 23rdev-lifetime:\n\nOops: general protection fault, probably for non-canonical address 0xdead000000000122\nRIP: 0010:bdi_unregister+0x4b/0x170\nCall Trace:\n \u003cTASK\u003e\n __del_gendisk+0x356/0x3e0\n mddev_unlock+0x351/0x360\n rdev_attr_store+0x217/0x280\n kernfs_fop_write_iter+0x14a/0x210\n vfs_write+0x29e/0x550\n ksys_write+0x74/0xf0\n do_syscall_64+0xbb/0x380\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7ff5250a177e\n\nThe sequence is:\n1. rdev remove path gets reconfig_mutex\n2. rdev remove path release reconfig_mutex in mddev_unlock\n3. md stop calls do_md_stop and sets MD_DELETED\n4. rdev remove path calls del_gendisk because MD_DELETED is set\n5. md stop path release reconfig_mutex and calls del_gendisk again\n\nSo there is a race condition we should resolve. This patch adds a\nflag MD_DO_DELETE to avoid the race condition.","modified":"2026-04-02T13:03:36.693769Z","published":"2025-12-24T10:33:03.375Z","related":["openSUSE-SU-2026:10039-1","openSUSE-SU-2026:10301-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68373.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/90e3bb44c0a86e245d8e5c6520206fa113acb1ee"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b4c5cf406062ad44cd178269571530c6435b2f3b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f0fae1debeb9102398ddf2ef69b4f5d395afafed"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68373.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68373"},{"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":"9e59d609763f70a992a8f3808dabcce60f14eb5c"},{"fixed":"b4c5cf406062ad44cd178269571530c6435b2f3b"},{"fixed":"f0fae1debeb9102398ddf2ef69b4f5d395afafed"},{"fixed":"90e3bb44c0a86e245d8e5c6520206fa113acb1ee"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68373.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"6.17.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68373.json"}}],"schema_version":"1.7.5"}