{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46315","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.111Z","datePublished":"2026-06-09T07:38:13.713Z","dateUpdated":"2026-06-14T18:08:38.384Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T18:08:38.384Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["io_uring/waitid.c"],"versions":[{"version":"f31ecf671ddc498f20219453395794ff2383e06b","lessThan":"954518e5a4a5efc5033253f6e36fc7b9f98363a3","status":"affected","versionType":"git"},{"version":"f31ecf671ddc498f20219453395794ff2383e06b","lessThan":"b737c6612c60c23b40a9f31749b99e6f61943847","status":"affected","versionType":"git"},{"version":"f31ecf671ddc498f20219453395794ff2383e06b","lessThan":"4d2a0de611ab60d02fc768ae0cd5918b16bd5474","status":"affected","versionType":"git"},{"version":"f31ecf671ddc498f20219453395794ff2383e06b","lessThan":"93d93f5f8da791e98159795c6ef683f45bd95d13","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["io_uring/waitid.c"],"versions":[{"version":"6.7","status":"affected"},{"version":"0","lessThan":"6.7","status":"unaffected","versionType":"semver"},{"version":"6.12.92","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.34","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.11","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.1"}]}]}],"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"}}}}