{"id":"CVE-2022-49641","state":"PUBLISHED","title":"sysctl: Fix data races in proc_douintvec().","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix data races in proc_douintvec().\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_douintvec() to use READ_ONCE() and WRITE_ONCE()\ninternally to fix data-races on the sysctl side.  For now, proc_douintvec()\nitself is tolerant to a data-race, but we still need to add annotations on\nthe other subsystem's side.","publishedAt":"2025-02-26T02:23:48.675Z","updatedAt":"2026-05-23T15:22:37.447Z","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":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"d5d54714e329f646bd7af4994fc427d88ee68936","versionType":"git"},{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"d335db59f7fb3353f56e52371f1ee796ae9c8f09","versionType":"git"},{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"630c76850d554d7140232e71b5d1663e88cffb54","versionType":"git"},{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"4762b532ec9539755aab61445d5da6e1926ccb99","versionType":"git"},{"version":"70cd763eb1574cac07138be91f474a661e02d694","status":"affected","versionType":"git"},{"version":"f4cea51e9a3d536e2ca2b74a958f7c0b4ea733c3","status":"affected","versionType":"git"},{"version":"4.4.24","status":"affected","lessThan":"4.5","versionType":"semver"},{"version":"4.7.7","status":"affected","lessThan":"4.8","versionType":"semver"}],"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":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"5.10.132","status":"unaffected","lessThanOrEqual":"5.10.*","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/d5d54714e329f646bd7af4994fc427d88ee68936","https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09","https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54","https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99"],"weaknesses":["CWE-362"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49641.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49641","state":"PUBLISHED","datePublished":"2025-02-26T02:23:48.675Z","dateUpdated":"2026-05-23T15:22:37.447Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.430Z"},"containers":{"cna":{"title":"sysctl: Fix data races in proc_douintvec().","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix data races in proc_douintvec().\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_douintvec() to use READ_ONCE() and WRITE_ONCE()\ninternally to fix data-races on the sysctl side.  For now, proc_douintvec()\nitself is tolerant to a data-race, but we still need to add annotations on\nthe other subsystem's side."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"d5d54714e329f646bd7af4994fc427d88ee68936","versionType":"git"},{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"d335db59f7fb3353f56e52371f1ee796ae9c8f09","versionType":"git"},{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"630c76850d554d7140232e71b5d1663e88cffb54","versionType":"git"},{"version":"e7d316a02f683864a12389f8808570e37fb90aa3","status":"affected","lessThan":"4762b532ec9539755aab61445d5da6e1926ccb99","versionType":"git"},{"version":"70cd763eb1574cac07138be91f474a661e02d694","status":"affected","versionType":"git"},{"version":"f4cea51e9a3d536e2ca2b74a958f7c0b4ea733c3","status":"affected","versionType":"git"},{"version":"4.4.24","status":"affected","lessThan":"4.5","versionType":"semver"},{"version":"4.7.7","status":"affected","lessThan":"4.8","versionType":"semver"}],"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":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"5.10.132","status":"unaffected","lessThanOrEqual":"5.10.*","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/d5d54714e329f646bd7af4994fc427d88ee68936"},{"url":"https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09"},{"url":"https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54"},{"url":"https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:22:37.447Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.10.132"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.15.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.18.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"5.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7.7"}]}]}],"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-2022-49641","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:33:58.576694Z"}}}],"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":"2025-10-01T19:36:48.974Z"}}]}}}