{"id":"CVE-2026-45888","state":"PUBLISHED","title":"md/raid1: fix memory leak in raid1_run()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: fix memory leak in raid1_run()\n\nraid1_run() calls setup_conf() which registers a thread via\nmd_register_thread(). If raid1_set_limits() fails, the previously\nregistered thread is not unregistered, resulting in a memory leak\nof the md_thread structure and the thread resource itself.\n\nAdd md_unregister_thread() to the error path to properly cleanup\nthe thread, which aligns with the error handling logic of other paths\nin this function.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review.","publishedAt":"2026-05-27T12:16:59.751Z","updatedAt":"2026-05-27T12:16:59.751Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"c94fd6e8a71efd047ff36930e840f3c25679e136","versionType":"git"},{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"ec10e3dc93994b87adf7c759a4639fe34013989a","versionType":"git"},{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"b37588b0282a2b3cdda9db1d53712745ce66dea0","versionType":"git"},{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"6abc7d5dcf0ee0f85e16e41c87fbd06231f28753","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]}],"references":["https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136","https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a","https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0","https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45888.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45888","state":"PUBLISHED","datePublished":"2026-05-27T12:16:59.751Z","dateUpdated":"2026-05-27T12:16:59.751Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.082Z"},"containers":{"cna":{"title":"md/raid1: fix memory leak in raid1_run()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: fix memory leak in raid1_run()\n\nraid1_run() calls setup_conf() which registers a thread via\nmd_register_thread(). If raid1_set_limits() fails, the previously\nregistered thread is not unregistered, resulting in a memory leak\nof the md_thread structure and the thread resource itself.\n\nAdd md_unregister_thread() to the error path to properly cleanup\nthe thread, which aligns with the error handling logic of other paths\nin this function.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"c94fd6e8a71efd047ff36930e840f3c25679e136","versionType":"git"},{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"ec10e3dc93994b87adf7c759a4639fe34013989a","versionType":"git"},{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"b37588b0282a2b3cdda9db1d53712745ce66dea0","versionType":"git"},{"version":"97894f7d3c2966164516a8a5109674763d3a55e1","status":"affected","lessThan":"6abc7d5dcf0ee0f85e16e41c87fbd06231f28753","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136"},{"url":"https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a"},{"url":"https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0"},{"url":"https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:16:59.751Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}