{"id":"CVE-2025-37808","state":"PUBLISHED","title":"crypto: null - Use spin lock instead of mutex","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: null - Use spin lock instead of mutex\n\nAs the null algorithm may be freed in softirq context through\naf_alg, use spin locks instead of mutexes to protect the default\nnull algorithm.","publishedAt":"2025-05-08T06:26:06.886Z","updatedAt":"2026-05-11T21:15:32.735Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"f7a5a5c8e1ec16a4b2041398abe95de0e14572ef","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"e307c54ac8198bf09652c72603ba6e6d97798410","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"1dd4a8561d85dea545cf93f56efc48df8176e218","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"e27244cbe10658a66b8775be7f0acc4ad2f618d6","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"1b66a5920b7fc7cc6251192a3fcad115b6d75dd5","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"0486de3c1b8223138dcc614846bd76364f758de6","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"8cf2945512a8c0ef74ddd5b5a4f6b6a2fb1a4efb","versionType":"git"},{"version":"330234638e16b7b95e8e5e6be719a61a93f074b8","status":"affected","lessThan":"dcc47a028c24e793ce6d6efebfef1a1e92f80297","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/crypto_null.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"5.4.293","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.237","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.136","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.89","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.26","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.14.5","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["crypto/crypto_null.c"]}],"references":["https://git.kernel.org/stable/c/f7a5a5c8e1ec16a4b2041398abe95de0e14572ef","https://git.kernel.org/stable/c/e307c54ac8198bf09652c72603ba6e6d97798410","https://git.kernel.org/stable/c/1dd4a8561d85dea545cf93f56efc48df8176e218","https://git.kernel.org/stable/c/e27244cbe10658a66b8775be7f0acc4ad2f618d6","https://git.kernel.org/stable/c/1b66a5920b7fc7cc6251192a3fcad115b6d75dd5","https://git.kernel.org/stable/c/0486de3c1b8223138dcc614846bd76364f758de6","https://git.kernel.org/stable/c/8cf2945512a8c0ef74ddd5b5a4f6b6a2fb1a4efb","https://git.kernel.org/stable/c/dcc47a028c24e793ce6d6efebfef1a1e92f80297","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/37xxx/CVE-2025-37808.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-37808","state":"PUBLISHED","datePublished":"2025-05-08T06:26:06.886Z","dateUpdated":"2026-05-11T21:15:32.735Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:23.942Z"},"containers":{"cna":{"title":"crypto: null - Use spin lock instead of mutex","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: null - Use spin lock instead of mutex\n\nAs the null algorithm may be freed in softirq context through\naf_alg, use spin locks instead of mutexes to protect the default\nnull 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