{"api_version":"1","generated_at":"2026-06-09T18:13:55+00:00","cve":"CVE-2026-46315","urls":{"html":"https://cve.report/CVE-2026-46315","api":"https://cve.report/api/cve/CVE-2026-46315.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46315","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46315"},"summary":{"title":"io_uring/waitid: clear waitid info before copying it to userspace","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/waitid: clear waitid info before copying it to userspace\n\nIORING_OP_WAITID stores its result fields in struct io_waitid::info and\nlater copies them to userspace siginfo. The prep path initializes the\nrequest arguments, but it does not initialize info itself.\n\nIf the wait operation completes without reporting a child event, the common\nwait code can return without writing wo_info. In that case io_waitid_finish()\nstill copies iw->info to userspace, exposing stale bytes from the reused\nio_kiocb command storage.\n\nClear the result storage during prep so the io_uring path matches the\nregular waitid syscall, which uses a zero-initialized struct waitid_info.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-09 09:16:30","updated_at":"2026-06-09 09:16:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/93d93f5f8da791e98159795c6ef683f45bd95d13","name":"https://git.kernel.org/stable/c/93d93f5f8da791e98159795c6ef683f45bd95d13","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4d2a0de611ab60d02fc768ae0cd5918b16bd5474","name":"https://git.kernel.org/stable/c/4d2a0de611ab60d02fc768ae0cd5918b16bd5474","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b737c6612c60c23b40a9f31749b99e6f61943847","name":"https://git.kernel.org/stable/c/b737c6612c60c23b40a9f31749b99e6f61943847","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/954518e5a4a5efc5033253f6e36fc7b9f98363a3","name":"https://git.kernel.org/stable/c/954518e5a4a5efc5033253f6e36fc7b9f98363a3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46315","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46315","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f31ecf671ddc498f20219453395794ff2383e06b 954518e5a4a5efc5033253f6e36fc7b9f98363a3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f31ecf671ddc498f20219453395794ff2383e06b b737c6612c60c23b40a9f31749b99e6f61943847 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f31ecf671ddc498f20219453395794ff2383e06b 4d2a0de611ab60d02fc768ae0cd5918b16bd5474 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f31ecf671ddc498f20219453395794ff2383e06b 93d93f5f8da791e98159795c6ef683f45bd95d13 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["io_uring/waitid.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"954518e5a4a5efc5033253f6e36fc7b9f98363a3","status":"affected","version":"f31ecf671ddc498f20219453395794ff2383e06b","versionType":"git"},{"lessThan":"b737c6612c60c23b40a9f31749b99e6f61943847","status":"affected","version":"f31ecf671ddc498f20219453395794ff2383e06b","versionType":"git"},{"lessThan":"4d2a0de611ab60d02fc768ae0cd5918b16bd5474","status":"affected","version":"f31ecf671ddc498f20219453395794ff2383e06b","versionType":"git"},{"lessThan":"93d93f5f8da791e98159795c6ef683f45bd95d13","status":"affected","version":"f31ecf671ddc498f20219453395794ff2383e06b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["io_uring/waitid.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.7"},{"lessThan":"6.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc5","versionStartIncluding":"6.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/waitid: clear waitid info before copying it to userspace\n\nIORING_OP_WAITID stores its result fields in struct io_waitid::info and\nlater copies them to userspace siginfo. The prep path initializes the\nrequest arguments, but it does not initialize info itself.\n\nIf the wait operation completes without reporting a child event, the common\nwait code can return without writing wo_info. In that case io_waitid_finish()\nstill copies iw->info to userspace, exposing stale bytes from the reused\nio_kiocb command storage.\n\nClear the result storage during prep so the io_uring path matches the\nregular waitid syscall, which uses a zero-initialized struct waitid_info."}],"providerMetadata":{"dateUpdated":"2026-06-09T07:38:13.713Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/954518e5a4a5efc5033253f6e36fc7b9f98363a3"},{"url":"https://git.kernel.org/stable/c/b737c6612c60c23b40a9f31749b99e6f61943847"},{"url":"https://git.kernel.org/stable/c/4d2a0de611ab60d02fc768ae0cd5918b16bd5474"},{"url":"https://git.kernel.org/stable/c/93d93f5f8da791e98159795c6ef683f45bd95d13"}],"title":"io_uring/waitid: clear waitid info before copying it to userspace","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46315","datePublished":"2026-06-09T07:38:13.713Z","dateReserved":"2026-05-13T15:03:33.111Z","dateUpdated":"2026-06-09T07:38:13.713Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-09 09:16:30","lastModifiedDate":"2026-06-09 09:16:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46315","Ordinal":"1","Title":"io_uring/waitid: clear waitid info before copying it to userspac","CVE":"CVE-2026-46315","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46315","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/waitid: clear waitid info before copying it to userspace\n\nIORING_OP_WAITID stores its result fields in struct io_waitid::info and\nlater copies them to userspace siginfo. The prep path initializes the\nrequest arguments, but it does not initialize info itself.\n\nIf the wait operation completes without reporting a child event, the common\nwait code can return without writing wo_info. In that case io_waitid_finish()\nstill copies iw->info to userspace, exposing stale bytes from the reused\nio_kiocb command storage.\n\nClear the result storage during prep so the io_uring path matches the\nregular waitid syscall, which uses a zero-initialized struct waitid_info.","Type":"Description","Title":"io_uring/waitid: clear waitid info before copying it to userspac"}]}}}