CVE-2026-99086

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99086", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.390Z", "datePublished": "2026-10-23T12:45:04.496Z", "dateUpdated": "2026-11-10T18:15:23.819Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-10T18:15:23.819Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: validate the superblock on resume\n\ndm_integrity_resume() re-reads the superblock from the device so that it\npicks up the flags and the recalculate position. It performs no\nvalidation on the result, while the constructor validates the superblock\nit reads and sizes all the in-memory structures according to it. The user\nmay modify the superblock on the underlying device while the dm-integrity\ndevice is suspended, so that the two no longer agree.\n\nIn particular, access_journal_data() shifts the journal entry index by\nic->sb->log2_sectors_per_block, while ic->journal_section_sectors and the\njournal page list were computed with the value that was present at\nconstructor time. Increasing log2_sectors_per_block makes the index run\npast the end of the journal, and dm-integrity then writes 512 bytes\nthrough lowmem_page_address(NULL).\n\nSnapshot the validated superblock in the constructor and refuse to resume\nif any of the fields that describe the on-disk geometry changed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/dm-integrity.c"], "versions": [{"version": "c6138af1f5454c2631a837916fda958ea72c0d71", "lessThan": "0499b6d1c9d4477d6538b88c30f9d0c1a28b3e75", "status": "affected", "versionType": "git"}, {"version": "38625191f32f77a9d5fc7cc15f4f9b78768bfb33", "lessThan": "454b67fcc28c18502e47dfb9f067b04c28628ada", "status": "affected", "versionType": "git"}, {"version": "118ba36e446c01e3cd34b3eedabf1d9436525e1d", "lessThan": "e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e", "status": "affected", "versionType": "git"}, {"version": "118ba36e446c01e3cd34b3eedabf1d9436525e1d", "lessThan": "fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2", "status": "affected", "versionType": "git"}, {"version": "824b9c27d7b600520b95f0cab95a47d1b08a9483", "status": "affected", "versionType": "git"}, {"version": "fb49f209995f729053c6ee728436f98d78a49b6f", "status": "affected", "versionType": "git"}, {"version": "3ff70e2e31c419e2230d0c66cb2bfb3b1b414b7f", "status": "affected", "versionType": "git"}, {"version": "6.12.75", "lessThan": "6.12.117", "status": "affected", "versionType": "semver"}, {"version": "6.18.16", "lessThan": "6.18.58", "status": "affected", "versionType": "semver"}, {"version": "6.1.165", "lessThan": "6.2", "status": "affected", "versionType": "semver"}, {"version": "6.6.128", "lessThan": "6.7", "status": "affected", "versionType": "semver"}, {"version": "6.19.6", "lessThan": "6.20", "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/md/dm-integrity.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.117", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.58", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.12", "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": "6.12.75", "versionEndExcluding": "6.12.117"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.16", "versionEndExcluding": "6.18.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.2.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0499b6d1c9d4477d6538b88c30f9d0c1a28b3e75"}, {"url": "https://git.kernel.org/stable/c/454b67fcc28c18502e47dfb9f067b04c28628ada"}, {"url": "https://git.kernel.org/stable/c/e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e"}, {"url": "https://git.kernel.org/stable/c/fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2"}], "title": "dm-integrity: validate the superblock on resume", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/md/dm-integrity.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0499b6d1c9d4477d6538b88c30f9d0c1a28b3e75", "status": "affected", "version": "c6138af1f5454c2631a837916fda958ea72c0d71", "versionType": "git"}, {"lessThan": "454b67fcc28c18502e47dfb9f067b04c28628ada", "status": "affected", "version": "38625191f32f77a9d5fc7cc15f4f9b78768bfb33", "versionType": "git"}, {"lessThan": "e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e", "status": "affected", "version": "118ba36e446c01e3cd34b3eedabf1d9436525e1d", "versionType": "git"}, {"lessThan": "fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2", "status": "affected", "version": "118ba36e446c01e3cd34b3eedabf1d9436525e1d", "versionType": "git"}, {"status": "affected", "version": "824b9c27d7b600520b95f0cab95a47d1b08a9483", "versionType": "git"}, {"status": "affected", "version": "fb49f209995f729053c6ee728436f98d78a49b6f", "versionType": "git"}, {"status": "affected", "version": "3ff70e2e31c419e2230d0c66cb2bfb3b1b414b7f", "versionType": "git"}, {"lessThan": "6.12.117", "status": "affected", "version": "6.12.75", "versionType": "semver"}, {"lessThan": "6.18.58", "status": "affected", "version": "6.18.16", "versionType": "semver"}, {"lessThan": "6.2", "status": "affected", "version": "6.1.165", "versionType": "semver"}, {"lessThan": "6.7", "status": "affected", "version": "6.6.128", "versionType": "semver"}, {"lessThan": "6.20", "status": "affected", "version": "6.19.6", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/md/dm-integrity.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.117", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.58", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.12", "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\ndm-integrity: validate the superblock on resume\n\ndm_integrity_resume() re-reads the superblock from the device so that it\npicks up the flags and the recalculate position. It performs no\nvalidation on the result, while the constructor validates the superblock\nit reads and sizes all the in-memory structures according to it. The user\nmay modify the superblock on the underlying device while the dm-integrity\ndevice is suspended, so that the two no longer agree.\n\nIn particular, access_journal_data() shifts the journal entry index by\nic->sb->log2_sectors_per_block, while ic->journal_section_sectors and the\njournal page list were computed with the value that was present at\nconstructor time. Increasing log2_sectors_per_block makes the index run\npast the end of the journal, and dm-integrity then writes 512 bytes\nthrough lowmem_page_address(NULL).\n\nSnapshot the validated superblock in the constructor and refuse to resume\nif any of the fields that describe the on-disk geometry changed."}], "id": "CVE-2026-99086", "lastModified": "2026-11-10T19:22:30.060", "metrics": {}, "published": "2026-10-23T13:17:33.113", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0499b6d1c9d4477d6538b88c30f9d0c1a28b3e75"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/454b67fcc28c18502e47dfb9f067b04c28628ada"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: dm-integrity: validate the superblock on resume", "id": "2559809", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559809"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndm-integrity: validate the superblock on resume\ndm_integrity_resume() re-reads the superblock from the device so that it\npicks up the flags and the recalculate position. It performs no\nvalidation on the result, while the constructor validates the superblock\nit reads and sizes all the in-memory structures according to it. The user\nmay modify the superblock on the underlying device while the dm-integrity\ndevice is suspended, so that the two no longer agree.\nIn particular, access_journal_data() shifts the journal entry index by\nic->sb->log2_sectors_per_block, while ic->journal_section_sectors and the\njournal page list were computed with the value that was present at\nconstructor time. Increasing log2_sectors_per_block makes the index run\npast the end of the journal, and dm-integrity then writes 512 bytes\nthrough lowmem_page_address(NULL).\nSnapshot the validated superblock in the constructor and refuse to resume\nif any of the fields that describe the on-disk geometry changed.", "A flaw was found in the Linux kernel's dm-integrity subsystem. When resuming a suspended integrity device, the kernel re-reads the storage metadata (superblock) without verifying that its layout matches the initial configuration. A local attacker with access to the underlying storage device could alter this metadata while the device is suspended, triggering an out-of-bounds memory write that leads to a system crash and Denial of Service (DoS)."], "name": "CVE-2026-99086", "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": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99086\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99086\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99086.mbox"], "threat_severity": "Moderate"}

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"status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff70e2e31c419e2230d0c66cb2bfb3b1b414b7f,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.16,6.18.58)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.0,*]"}}, 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"[118ba36e446c01e3cd34b3eedabf1d9436525e1d,e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[118ba36e446c01e3cd34b3eedabf1d9436525e1d,fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[824b9c27d7b600520b95f0cab95a47d1b08a9483,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[fb49f209995f729053c6ee728436f98d78a49b6f,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6138af1f5454c2631a837916fda958ea72c0d71,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff70e2e31c419e2230d0c66cb2bfb3b1b414b7f,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.16,6.18.58)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", 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"[7.2.12,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T17:15:07.224156+00:00", "updated": "2026-10-27T18:30:08.202889+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}