{"id":"CVE-2022-48630","state":"PUBLISHED","title":"crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ\n\nThe commit referenced in the Fixes tag removed the 'break' from the else\nbranch in qcom_rng_read(), causing an infinite loop whenever 'max' is\nnot a multiple of WORD_SZ. This can be reproduced e.g. by running:\n\n    kcapi-rng -b 67 >/dev/null\n\nThere are many ways to fix this without adding back the 'break', but\nthey all seem more awkward than simply adding it back, so do just that.\n\nTested on a machine with Qualcomm Amberwing processor.","publishedAt":"2024-03-05T11:18:07.394Z","updatedAt":"2026-05-23T15:20:25.489Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a8e32bbb96c25b7ab29b1894dcd45e0b3b08fd9d","status":"affected","lessThan":"71a89789552b7faf3ef27969b9bc783fa0df3550","versionType":"git"},{"version":"184f7bd08ce56f003530fc19f160d54e75bf5c9d","status":"affected","lessThan":"8be06f62b426801dba43ddf8893952a0e62ab6ae","versionType":"git"},{"version":"0f9b7b8df17525e464294c916acc8194ce38446b","status":"affected","lessThan":"233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c","versionType":"git"},{"version":"ab9337c7cb6f875b6286440b1adfbeeef2b2b2bd","status":"affected","lessThan":"8a06f25f5941c145773204f2f7abef95b4ffb8ce","versionType":"git"},{"version":"a680b1832ced3b5fa7c93484248fd221ea0d614b","status":"affected","lessThan":"05d4d17475d8d094c519bb51658bc47899c175e3","versionType":"git"},{"version":"a680b1832ced3b5fa7c93484248fd221ea0d614b","status":"affected","lessThan":"16287397ec5c08aa58db6acf7dbc55470d78087d","versionType":"git"},{"version":"485995cbc98a4f77cfd4f8ed4dd7ff8ab262964d","status":"affected","versionType":"git"},{"version":"4.19.236","status":"affected","lessThan":"4.19.245","versionType":"semver"},{"version":"5.4.187","status":"affected","lessThan":"5.4.196","versionType":"semver"},{"version":"5.10.108","status":"affected","lessThan":"5.10.118","versionType":"semver"},{"version":"5.15.31","status":"affected","lessThan":"5.15.42","versionType":"semver"},{"version":"5.16.17","status":"affected","lessThan":"5.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qcom-rng.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"4.19.245","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.196","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.118","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.42","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.10","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/crypto/qcom-rng.c"]}],"references":["https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550","https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6ae","https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866c","https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8ce","https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3","https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/48xxx/CVE-2022-48630.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48630","state":"PUBLISHED","datePublished":"2024-03-05T11:18:07.394Z","dateUpdated":"2026-05-23T15:20:25.489Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-25T13:44:28.315Z"},"containers":{"cna":{"title":"crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ\n\nThe commit referenced in the Fixes tag removed the 'break' from the else\nbranch in qcom_rng_read(), causing an infinite loop whenever 'max' is\nnot a multiple of WORD_SZ. 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