{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45975","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.090Z","datePublished":"2026-05-27T12:18:33.939Z","dateUpdated":"2026-05-27T12:18:33.939Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-27T12:18:33.939Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd\n\nstruct ublksrv_ctrl_cmd is part of the io_uring_sqe, which may lie in\nuserspace-mapped memory. It's racy to access its fields with normal\nloads, as userspace may write to them concurrently. Use READ_ONCE() to\ncopy the ublksrv_ctrl_cmd from the io_uring_sqe to the stack. Use the\nlocal copy in place of the one in the io_uring_sqe."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/ublk_drv.c"],"versions":[{"version":"87213b0d847cd300285b5545598e0548baeb5208","lessThan":"ce63eda3e6d36e2c253febee1c8421ecbd1a680e","status":"affected","versionType":"git"},{"version":"87213b0d847cd300285b5545598e0548baeb5208","lessThan":"ed9f54cc1e335096733aed03c2a46de3d58922ed","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/ublk_drv.c"],"versions":[{"version":"6.19","status":"affected"},{"version":"0","lessThan":"6.19","status":"unaffected","versionType":"semver"},{"version":"6.19.4","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"6.19","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ce63eda3e6d36e2c253febee1c8421ecbd1a680e"},{"url":"https://git.kernel.org/stable/c/ed9f54cc1e335096733aed03c2a46de3d58922ed"}],"title":"ublk: use READ_ONCE() to read struct ublksrv_ctrl_cmd","x_generator":{"engine":"bippy-1.2.0"}}}}