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Adding it\ntwice will corrupt the linked list in some cases.\n\nIt effects HWPT specific attachment, which is something the test suite\ncannot cover until we can create a legitimate struct device with a\nnon-system iommu \"driver\" (ie we need the bus removed from the iommu code)","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-24 13:16:05","updated_at":"2026-08-04 10:19:26"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","data":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/b4ff830eca097df51af10a9be29e8cc817327919","name":"https://git.kernel.org/stable/c/b4ff830eca097df51af10a9be29e8cc817327919","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c44adefdcf472f946f0632f4e0ddcbf3e00b8516","name":"https://git.kernel.org/stable/c/c44adefdcf472f946f0632f4e0ddcbf3e00b8516","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-54043","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54043","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8d57210035b6377d424ba964961892d01127cf6 c44adefdcf472f946f0632f4e0ddcbf3e00b8516 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8d57210035b6377d424ba964961892d01127cf6 b4ff830eca097df51af10a9be29e8cc817327919 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2.3 6.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2023","cve_id":"54043","cve":"CVE-2023-54043","epss":"0.001600000","percentile":"0.056420000","score_date":"2026-08-06","updated_at":"2026-08-07 00:14:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/iommufd/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c44adefdcf472f946f0632f4e0ddcbf3e00b8516","status":"affected","version":"e8d57210035b6377d424ba964961892d01127cf6","versionType":"git"},{"lessThan":"b4ff830eca097df51af10a9be29e8cc817327919","status":"affected","version":"e8d57210035b6377d424ba964961892d01127cf6","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/iommufd/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.2.*","status":"unaffected","version":"6.2.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.2.3","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.3","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Do not add the same hwpt to the ioas->hwpt_list twice\n\nThe hwpt is added to the hwpt_list only during its creation, it is never\nadded again. This hunk is some missed leftover from rework. Adding it\ntwice will corrupt the linked list in some cases.\n\nIt effects HWPT specific attachment, which is something the test suite\ncannot cover until we can create a legitimate struct device with a\nnon-system iommu \"driver\" (ie we need the bus removed from the iommu code)"}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:17:17.679Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c44adefdcf472f946f0632f4e0ddcbf3e00b8516"},{"url":"https://git.kernel.org/stable/c/b4ff830eca097df51af10a9be29e8cc817327919"}],"title":"iommufd: Do not add the same hwpt to the ioas->hwpt_list twice","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-54043","datePublished":"2025-12-24T12:22:55.392Z","dateReserved":"2025-12-24T10:53:46.181Z","dateUpdated":"2026-08-04T09:17:17.679Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-24 13:16:05","lastModifiedDate":"2026-08-04 10:19:26","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2,"impactScore":6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"54043","Ordinal":"1","Title":"iommufd: Do not add the same hwpt to the ioas->hwpt_list twice","CVE":"CVE-2023-54043","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"54043","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Do not add the same hwpt to the ioas->hwpt_list twice\n\nThe hwpt is added to the hwpt_list only during its creation, it is never\nadded again. This hunk is some missed leftover from rework. Adding it\ntwice will corrupt the linked list in some cases.\n\nIt effects HWPT specific attachment, which is something the test suite\ncannot cover until we can create a legitimate struct device with a\nnon-system iommu \"driver\" (ie we need the bus removed from the iommu code)","Type":"Description","Title":"iommufd: Do not add the same hwpt to the ioas->hwpt_list twice"}]}}}