CVE-2026-53164

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53164", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.388Z", "datePublished": "2026-06-25T08:38:44.770Z", "dateUpdated": "2026-11-06T16:24:05.834Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:38:44.770Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/dma: Do not try to iommu_map a 0 length region in swiotlb\n\niommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three\nparts, the head, middle and trailer. If the middle is empty because there\nare no aligned pages it will call down to iommu_map() with a 0 size\nwhich the iommupt implementation will fail as illegal.\n\nIt then tries to do an error unwind and starts from the wrong spot\ncorrupting the mapping so the eventual destruction triggers a WARN_ON.\n\nCheck for 0 length and avoid mapping and use offset not 0 as the starting\npoint to unlink.\n\nThis is frequently triggered by using some kinds of thunderbolt NVMe\ndrives that trigger forced SWIOTLB for unaligned memory. NVMe seems to\npass in oddly aligned buffers for the passthrough commands from smartctl\nthat hit this condition."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/dma-iommu.c"], "versions": [{"version": "433a76207dcf5facc0183acb790f6e8398585258", "lessThan": "ab61c990a87d084f5565ee70340543e3a5394697", "status": "affected", "versionType": "git"}, {"version": "433a76207dcf5facc0183acb790f6e8398585258", "lessThan": "b16f8d40bac9ced838d24c9842707af9ecae92e2", "status": "affected", "versionType": "git"}, {"version": "433a76207dcf5facc0183acb790f6e8398585258", "lessThan": "6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3", "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/dma-iommu.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "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": "6.16", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ab61c990a87d084f5565ee70340543e3a5394697"}, {"url": "https://git.kernel.org/stable/c/b16f8d40bac9ced838d24c9842707af9ecae92e2"}, {"url": "https://git.kernel.org/stable/c/6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3"}], "title": "iommu/dma: Do not try to iommu_map a 0 length region in swiotlb", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53164", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:21:33.772734Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:24:05.834Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53164", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:21:33.772734Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:21:35.066Z"}}], "cna": {"title": "iommu/dma: Do not try to iommu_map a 0 length region in swiotlb", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "433a76207dcf5facc0183acb790f6e8398585258", "lessThan": "ab61c990a87d084f5565ee70340543e3a5394697", "versionType": "git"}, {"status": "affected", "version": "433a76207dcf5facc0183acb790f6e8398585258", "lessThan": "b16f8d40bac9ced838d24c9842707af9ecae92e2", "versionType": "git"}, {"status": "affected", "version": "433a76207dcf5facc0183acb790f6e8398585258", "lessThan": "6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3", "versionType": "git"}], "programFiles": ["drivers/iommu/dma-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": "6.16"}, {"status": "unaffected", "version": "0", "lessThan": "6.16", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.36", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.13", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/iommu/dma-iommu.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/ab61c990a87d084f5565ee70340543e3a5394697"}, {"url": "https://git.kernel.org/stable/c/b16f8d40bac9ced838d24c9842707af9ecae92e2"}, {"url": "https://git.kernel.org/stable/c/6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/dma: Do not try to iommu_map a 0 length region in swiotlb\n\niommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three\nparts, the head, middle and trailer. If the middle is empty because there\nare no aligned pages it will call down to iommu_map() with a 0 size\nwhich the iommupt implementation will fail as illegal.\n\nIt then tries to do an error unwind and starts from the wrong spot\ncorrupting the mapping so the eventual destruction triggers a WARN_ON.\n\nCheck for 0 length and avoid mapping and use offset not 0 as the starting\npoint to unlink.\n\nThis is frequently triggered by using some kinds of thunderbolt NVMe\ndrives that trigger forced SWIOTLB for unaligned memory. NVMe seems to\npass in oddly aligned buffers for the passthrough commands from smartctl\nthat hit this condition."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.36", "versionStartIncluding": "6.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "6.16"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:38:44.770Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53164", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:24:05.834Z", "dateReserved": "2026-06-09T07:44:35.388Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-25T08:38:44.770Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/iommu/dma-iommu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ab61c990a87d084f5565ee70340543e3a5394697", "status": "affected", "version": "433a76207dcf5facc0183acb790f6e8398585258", "versionType": "git"}, {"lessThan": "b16f8d40bac9ced838d24c9842707af9ecae92e2", "status": "affected", "version": "433a76207dcf5facc0183acb790f6e8398585258", "versionType": "git"}, {"lessThan": "6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3", "status": "affected", "version": "433a76207dcf5facc0183acb790f6e8398585258", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/iommu/dma-iommu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.36", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C502A34A-34EF-41DB-9280-104B7360171B", "versionEndExcluding": "6.18.36", "versionStartIncluding": "6.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6A64BF9F-3BCA-42FD-98CB-8F03474D2B1E", "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "1039E95A-8CC3-4C88-8FF9-5C08EEB861C9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/dma: Do not try to iommu_map a 0 length region in swiotlb\n\niommu_dma_iova_link_swiotlb() processes a mapping that is unaligned in three\nparts, the head, middle and trailer. If the middle is empty because there\nare no aligned pages it will call down to iommu_map() with a 0 size\nwhich the iommupt implementation will fail as illegal.\n\nIt then tries to do an error unwind and starts from the wrong spot\ncorrupting the mapping so the eventual destruction triggers a WARN_ON.\n\nCheck for 0 length and avoid mapping and use offset not 0 as the starting\npoint to unlink.\n\nThis is frequently triggered by using some kinds of thunderbolt NVMe\ndrives that trigger forced SWIOTLB for unaligned memory. NVMe seems to\npass in oddly aligned buffers for the passthrough commands from smartctl\nthat hit this condition."}], "id": "CVE-2026-53164", "lastModified": "2026-11-06T17:18:12.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53164", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:21:33.772734Z", "version": "2.0.3"}}]}, "published": "2026-06-25T09:16:33.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ab61c990a87d084f5565ee70340543e3a5394697"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b16f8d40bac9ced838d24c9842707af9ecae92e2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: iommu/dma: Do not try to iommu_map a 0 length region in swiotlb", "id": "2492794", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492794"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-805", "details": ["A flaw was found in the Linux kernel's input/output memory management unit (IOMMU) Direct Memory Access (DMA) subsystem, specifically within the software IOMMU bounce buffer (SWIOTLB) mechanism. This vulnerability occurs when the system attempts to map a zero-length memory region, which can be triggered by certain Thunderbolt NVMe drives passing unaligned memory buffers. This improper handling can lead to corruption of memory mappings, potentially causing system instability or a denial of service (DoS)."], "name": "CVE-2026-53164", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53164\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53164\nhttps://lore.kernel.org/linux-cve-announce/2026062550-CVE-2026-53164-88ad@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[433a76207dcf5facc0183acb790f6e8398585258,ab61c990a87d084f5565ee70340543e3a5394697)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[433a76207dcf5facc0183acb790f6e8398585258,b16f8d40bac9ced838d24c9842707af9ecae92e2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[433a76207dcf5facc0183acb790f6e8398585258,6ec91df8aff77e2e8fe3179c1f3fc15b43a40ba3)"}}], "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": "6.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"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": "2026-06-25T11:45:03.802891+00:00", "updated": "2026-08-12T08:00:03.546758+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}