{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68373","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-16T14:48:05.310Z","datePublished":"2025-12-24T10:33:03.375Z","dateUpdated":"2026-05-11T21:51:57.240Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:51:57.240Z"},"descriptions":[{"lang":"en","value":"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 <TASK>\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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"],"versions":[{"version":"9e59d609763f70a992a8f3808dabcce60f14eb5c","lessThan":"b4c5cf406062ad44cd178269571530c6435b2f3b","status":"affected","versionType":"git"},{"version":"9e59d609763f70a992a8f3808dabcce60f14eb5c","lessThan":"f0fae1debeb9102398ddf2ef69b4f5d395afafed","status":"affected","versionType":"git"},{"version":"9e59d609763f70a992a8f3808dabcce60f14eb5c","lessThan":"90e3bb44c0a86e245d8e5c6520206fa113acb1ee","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"],"versions":[{"version":"6.17","status":"affected"},{"version":"0","lessThan":"6.17","status":"unaffected","versionType":"semver"},{"version":"6.17.13","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18.2","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.17.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/b4c5cf406062ad44cd178269571530c6435b2f3b"},{"url":"https://git.kernel.org/stable/c/f0fae1debeb9102398ddf2ef69b4f5d395afafed"},{"url":"https://git.kernel.org/stable/c/90e3bb44c0a86e245d8e5c6520206fa113acb1ee"}],"title":"md: avoid repeated calls to del_gendisk","x_generator":{"engine":"bippy-1.2.0"}}}}