{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64290", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.778Z", "datePublished": "2026-07-25T08:49:30.049Z", "dateUpdated": "2026-07-25T08:49:30.049Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:49:30.049Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Break the loop on failure in iommufd_fault_fops_read()\n\nOn a copy_to_user() failure inside the inner list_for_each_entry, only the\ninner loop breaks; the outer while re-fetches the just-restored fault group\nand retries the failing copy_to_user() forever, spinning the reader at 100%\nCPU with fault->mutex held.\n\nCheck rc after the inner loop and break the outer while as well."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/iommufd/eventq.c"], "versions": [{"version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed", "lessThan": "5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8", "status": "affected", "versionType": "git"}, {"version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed", "lessThan": "f66c16b175509642ee7082df57c9bf3deaebae1a", "status": "affected", "versionType": "git"}, {"version": "07838f7fd529c8a6de44b601d4b7057e6c8d36ed", "lessThan": "172fc8b19825a0f5884c38f2289188284e2d45ee", "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/iommu/iommufd/eventq.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "6.11", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8"}, {"url": "https://git.kernel.org/stable/c/f66c16b175509642ee7082df57c9bf3deaebae1a"}, {"url": "https://git.kernel.org/stable/c/172fc8b19825a0f5884c38f2289188284e2d45ee"}], "title": "iommufd: Break the loop on failure in iommufd_fault_fops_read()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[07838f7fd529c8a6de44b601d4b7057e6c8d36ed,5539da127d03c1f6c2e2a49fdfbe331a0ccbdea8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[07838f7fd529c8a6de44b601d4b7057e6c8d36ed,f66c16b175509642ee7082df57c9bf3deaebae1a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[07838f7fd529c8a6de44b601d4b7057e6c8d36ed,172fc8b19825a0f5884c38f2289188284e2d45ee)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.39,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.4,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T14:45:03.406516+00:00", "updated": "2026-07-25T14:45:03.406544+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}