{"id":"CVE-2026-46171","state":"PUBLISHED","title":"riscv: kvm: fix vector context allocation leak","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: kvm: fix vector context allocation leak\n\nWhen the second kzalloc (host_context.vector.datap) fails in\nkvm_riscv_vcpu_alloc_vector_context, the first allocation\n(guest_context.vector.datap) is leaked. Free it before returning.","publishedAt":"2026-05-28T09:36:25.966Z","updatedAt":"2026-10-21T12:41:22.651Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"8f3a5dc4055e1001b44ca8ae2bd3eb1d07782049","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"70ecebe7c58ce01f8da3f513eafb51bd147b1e63","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"bd62c0f61bc722a097417401030c596cea8e21aa","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kvm/vcpu_vector.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kvm/vcpu_vector.c"]}],"references":["https://git.kernel.org/stable/c/8f3a5dc4055e1001b44ca8ae2bd3eb1d07782049","https://git.kernel.org/stable/c/70ecebe7c58ce01f8da3f513eafb51bd147b1e63","https://git.kernel.org/stable/c/bd62c0f61bc722a097417401030c596cea8e21aa","https://git.kernel.org/stable/c/1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98","https://git.kernel.org/stable/c/b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46171.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46171","state":"PUBLISHED","datePublished":"2026-05-28T09:36:25.966Z","dateUpdated":"2026-10-21T12:41:22.651Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.103Z"},"containers":{"cna":{"title":"riscv: kvm: fix vector context allocation leak","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: kvm: fix vector context allocation leak\n\nWhen the second kzalloc (host_context.vector.datap) fails in\nkvm_riscv_vcpu_alloc_vector_context, the first allocation\n(guest_context.vector.datap) is leaked. Free it before returning."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"8f3a5dc4055e1001b44ca8ae2bd3eb1d07782049","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"70ecebe7c58ce01f8da3f513eafb51bd147b1e63","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"bd62c0f61bc722a097417401030c596cea8e21aa","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98","versionType":"git"},{"version":"0f4b82579716b12bb88257bd7ea80f25c791fb2c","status":"affected","lessThan":"b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kvm/vcpu_vector.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kvm/vcpu_vector.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8f3a5dc4055e1001b44ca8ae2bd3eb1d07782049"},{"url":"https://git.kernel.org/stable/c/70ecebe7c58ce01f8da3f513eafb51bd147b1e63"},{"url":"https://git.kernel.org/stable/c/bd62c0f61bc722a097417401030c596cea8e21aa"},{"url":"https://git.kernel.org/stable/c/1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98"},{"url":"https://git.kernel.org/stable/c/b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:41:22.651Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}