CVE-2026-92505

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-92505", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-16T12:21:13.872Z", "datePublished": "2026-09-17T16:10:17.389Z", "dateUpdated": "2026-10-19T09:04:11.374Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:04:11.374Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Fix undefined behavior in devid_write debugfs function\n\nWhen for_each_pci_segment() loop completes without finding a matching\nsegment, the pci_seg pointer is not NULL but points to an invalid memory\nlocation (the list head). Accessing pci_seg->id after the loop causes\nundefined behavior.\n\nFix this by handling the successful case inside the loop and returning\n-EINVAL after the loop if no matching segment is found."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/amd/debugfs.c"], "versions": [{"version": "2e98940f123d9c69d4759078aea9a536244c98d3", "lessThan": "8aabe0fba01486b5d893e708b05a8fa7f1b7efbb", "status": "affected", "versionType": "git"}, {"version": "2e98940f123d9c69d4759078aea9a536244c98d3", "lessThan": "99d42aef089a07cfb1d404a7227ac9dc7628b497", "status": "affected", "versionType": "git"}, {"version": "2e98940f123d9c69d4759078aea9a536244c98d3", "lessThan": "843e149989665f8309ad2efe6048dc76591e1f94", "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/amd/debugfs.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.17", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8aabe0fba01486b5d893e708b05a8fa7f1b7efbb"}, {"url": "https://git.kernel.org/stable/c/99d42aef089a07cfb1d404a7227ac9dc7628b497"}, {"url": "https://git.kernel.org/stable/c/843e149989665f8309ad2efe6048dc76591e1f94"}], "title": "iommu/amd: Fix undefined behavior in devid_write debugfs function", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/iommu/amd/debugfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8aabe0fba01486b5d893e708b05a8fa7f1b7efbb", "status": "affected", "version": "2e98940f123d9c69d4759078aea9a536244c98d3", "versionType": "git"}, {"lessThan": "99d42aef089a07cfb1d404a7227ac9dc7628b497", "status": "affected", "version": "2e98940f123d9c69d4759078aea9a536244c98d3", "versionType": "git"}, {"lessThan": "843e149989665f8309ad2efe6048dc76591e1f94", "status": "affected", "version": "2e98940f123d9c69d4759078aea9a536244c98d3", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/iommu/amd/debugfs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Fix undefined behavior in devid_write debugfs function\n\nWhen for_each_pci_segment() loop completes without finding a matching\nsegment, the pci_seg pointer is not NULL but points to an invalid memory\nlocation (the list head). Accessing pci_seg->id after the loop causes\nundefined behavior.\n\nFix this by handling the successful case inside the loop and returning\n-EINVAL after the loop if no matching segment is found."}], "id": "CVE-2026-92505", "lastModified": "2026-10-19T10:16:50.783", "metrics": {}, "published": "2026-09-17T17:17:53.077", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/843e149989665f8309ad2efe6048dc76591e1f94"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8aabe0fba01486b5d893e708b05a8fa7f1b7efbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/99d42aef089a07cfb1d404a7227ac9dc7628b497"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e98940f123d9c69d4759078aea9a536244c98d3,8aabe0fba01486b5d893e708b05a8fa7f1b7efbb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e98940f123d9c69d4759078aea9a536244c98d3,99d42aef089a07cfb1d404a7227ac9dc7628b497)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e98940f123d9c69d4759078aea9a536244c98d3,843e149989665f8309ad2efe6048dc76591e1f94)"}}], "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": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-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": "2026-09-19T10:00:07.643870+00:00", "updated": "2026-09-19T11:15:13.958380+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}