CVE-2026-53281

{"id": "CVE-2026-53281", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.0}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "60f030f7418d3f1d94f2fb207fe3080e1844630b", "lessThan": "9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153", "versionType": "git"}, {"status": "affected", "version": "60f030f7418d3f1d94f2fb207fe3080e1844630b", "lessThan": "cdfe3c9f2c9e28a8651ee463c88ad191ced2f840", "versionType": "git"}, {"status": "affected", "version": "60f030f7418d3f1d94f2fb207fe3080e1844630b", "lessThan": "79ea2feb917b05366b49d85573c9c5331f043b2c", "versionType": "git"}, {"status": "affected", "version": "68ec78beb4a3fb0877cbaaf49758c85410c05977", "versionType": "git"}, {"status": "affected", "version": "df96876be3b064aefc493f760e0639765d13ed0d", "versionType": "git"}, {"status": "affected", "version": "6.12.57", "lessThan": "6.13", "versionType": "semver"}, {"status": "affected", "version": "6.13.3", "lessThan": "6.14", "versionType": "semver"}], "programFiles": ["drivers/iommu/intel/iommu.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.14"}, {"status": "unaffected", "version": "0", "lessThan": "6.14", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/iommu/intel/iommu.c"], "defaultStatus": "affected"}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "defaultStatus": "unaffected"}]}], "published": "2026-06-26T20:17:19.600", "references": [{"url": "https://git.kernel.org/stable/c/79ea2feb917b05366b49d85573c9c5331f043b2c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9022cb9ac0c2a72a57fa8ebf92ac74f953ca0153", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cdfe3c9f2c9e28a8651ee463c88ad191ced2f840", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-53281", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493728", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53281.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Awaiting Analysis", "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"}], "lastModified": "2026-06-30T14:44:27.313", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}