{"id":"CVE-2022-49634","state":"PUBLISHED","title":"sysctl: Fix data-races in proc_dou8vec_minmax().","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix data-races in proc_dou8vec_minmax().\n\nA sysctl variable is accessed concurrently, and there is always a chance\nof data-race.  So, all readers and writers need some basic protection to\navoid load/store-tearing.\n\nThis patch changes proc_dou8vec_minmax() to use READ_ONCE() and\nWRITE_ONCE() internally to fix data-races on the sysctl side.  For now,\nproc_dou8vec_minmax() itself is tolerant to a data-race, but we still\nneed to add annotations on the other subsystem's side.","publishedAt":"2025-02-26T02:23:45.254Z","updatedAt":"2026-05-11T19:03:43.676Z","severity":{"score":4.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"389dab6142d742f91010f38de0f1f2f440b97e1b","status":"affected","lessThan":"f177b382c33900d0e5a9766493c11a1074076f78","versionType":"git"},{"version":"cb9444130662c6c13022579c861098f212db2562","status":"affected","lessThan":"e58b02e445463065b4078bf621561da75197853f","versionType":"git"},{"version":"cb9444130662c6c13022579c861098f212db2562","status":"affected","lessThan":"5f776daef0b5354615ec4b4234cd9539ca05f273","versionType":"git"},{"version":"cb9444130662c6c13022579c861098f212db2562","status":"affected","lessThan":"7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/sysctl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.56","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.13","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/sysctl.c"]}],"references":["https://git.kernel.org/stable/c/f177b382c33900d0e5a9766493c11a1074076f78","https://git.kernel.org/stable/c/e58b02e445463065b4078bf621561da75197853f","https://git.kernel.org/stable/c/5f776daef0b5354615ec4b4234cd9539ca05f273","https://git.kernel.org/stable/c/7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18"],"weaknesses":["CWE-362"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49634.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49634","state":"PUBLISHED","datePublished":"2025-02-26T02:23:45.254Z","dateUpdated":"2026-05-11T19:03:43.676Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.429Z"},"containers":{"cna":{"title":"sysctl: Fix data-races in proc_dou8vec_minmax().","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix data-races in proc_dou8vec_minmax().\n\nA sysctl variable is accessed concurrently, and there is always a chance\nof data-race.  So, all readers and writers need some basic protection to\navoid load/store-tearing.\n\nThis patch changes proc_dou8vec_minmax() to use READ_ONCE() and\nWRITE_ONCE() internally to fix data-races on the sysctl side.  For now,\nproc_dou8vec_minmax() itself is tolerant to a data-race, but we still\nneed to add annotations on the other subsystem's side."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"389dab6142d742f91010f38de0f1f2f440b97e1b","status":"affected","lessThan":"f177b382c33900d0e5a9766493c11a1074076f78","versionType":"git"},{"version":"cb9444130662c6c13022579c861098f212db2562","status":"affected","lessThan":"e58b02e445463065b4078bf621561da75197853f","versionType":"git"},{"version":"cb9444130662c6c13022579c861098f212db2562","status":"affected","lessThan":"5f776daef0b5354615ec4b4234cd9539ca05f273","versionType":"git"},{"version":"cb9444130662c6c13022579c861098f212db2562","status":"affected","lessThan":"7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/sysctl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.56","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.13","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/sysctl.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f177b382c33900d0e5a9766493c11a1074076f78"},{"url":"https://git.kernel.org/stable/c/e58b02e445463065b4078bf621561da75197853f"},{"url":"https://git.kernel.org/stable/c/5f776daef0b5354615ec4b4234cd9539ca05f273"},{"url":"https://git.kernel.org/stable/c/7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:03:43.676Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.18.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.7,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49634","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:34:15.087673Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","type":"CWE","description":"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:36:49.653Z"}}]}}}