{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53281", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.396Z", "datePublished": "2026-06-26T19:40:43.040Z", "dateUpdated": "2026-06-26T19:40:43.040Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-26T19:40:43.040Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Avoid NULL pointer dereference or refcount corruption\n\nCommit 60f030f7418d (\"iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE\")\nfixed a NULL pointer dereference in an unlikely situation partly.\n\nIf dev_pasid is not found in the dev_pasids list, it remains NULL.\nHowever, the teardown operations are executed unconditionally, this lead\nto a NULL pointer dereference or refcount corruption.\n\nIf the domain was never attached to this IOMMU, info will be NULL, which\nwould cause an immediate dereference when checking --info->refcnt.\n\nEven if info is not NULL, decrementing the refcount without having removed\na valid PASID might unbalance the count. This could lead to premature\ndropping of the refcount to 0, potentially causing a use-after-free for the\nremaining active devices sharing the domain.\n\nFix it by returning early if dev_pasid is NULL, before executing the\nteardown operations.\n\nIssue found by AI review and suggested by Kevin Tian.\nhttps://sashiko.dev/#/patchset/20260421031347.1408890-1-zhenzhong.duan%40intel.com"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/intel/iommu.c"], "versions": [{"version": "60f030f7418d3f1d94f2fb207fe3080e1844630b", "lessThan": "9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153", "status": "affected", "versionType": "git"}, {"version": "60f030f7418d3f1d94f2fb207fe3080e1844630b", "lessThan": "cdfe3c9f2c9e28a8651ee463c88ad191ced2f840", "status": "affected", "versionType": "git"}, {"version": "60f030f7418d3f1d94f2fb207fe3080e1844630b", "lessThan": "79ea2feb917b05366b49d85573c9c5331f043b2c", "status": "affected", "versionType": "git"}, {"version": "68ec78beb4a3fb0877cbaaf49758c85410c05977", "status": "affected", "versionType": "git"}, {"version": "df96876be3b064aefc493f760e0639765d13ed0d", "status": "affected", "versionType": "git"}, {"version": "6.12.57", "lessThan": "6.13", "status": "affected", "versionType": "semver"}, {"version": "6.13.3", "lessThan": "6.14", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/intel/iommu.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "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": "6.14", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153"}, {"url": "https://git.kernel.org/stable/c/cdfe3c9f2c9e28a8651ee463c88ad191ced2f840"}, {"url": "https://git.kernel.org/stable/c/79ea2feb917b05366b49d85573c9c5331f043b2c"}], "title": "iommu/vt-d: Avoid NULL pointer dereference or refcount corruption", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[60f030f7418d3f1d94f2fb207fe3080e1844630b,9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[60f030f7418d3f1d94f2fb207fe3080e1844630b,cdfe3c9f2c9e28a8651ee463c88ad191ced2f840)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[60f030f7418d3f1d94f2fb207fe3080e1844630b,79ea2feb917b05366b49d85573c9c5331f043b2c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "68ec78beb4a3fb0877cbaaf49758c85410c05977"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "df96876be3b064aefc493f760e0639765d13ed0d"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.57,6.13)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.13.3,6.14)"}}], "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": "semver", "value": "6.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.33,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.10,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-06-26T22:00:07.661585+00:00", "updated": "2026-06-27T01:45:09.097159+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476", "CWE-416"]}