{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72099", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.905Z", "datePublished": "2026-08-15T05:52:44.292Z", "dateUpdated": "2026-08-23T12:46:49.483Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:46:49.483Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: don't increment hash_offset twice\n\nhash_offset is already incremented in the loop \"for (i = 0; i < to_copy;\ni++, ts--)\". Do not increment it again."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The flaw is reached via block I/O on dm-integrity journal/bitmap targets; in enterprise/cloud deployments those volumes are commonly accessed remotely through NFS/ksmbd file exports or iSCSI/NVMe-oF/NBD block protocols, letting a remote client drive the vulnerable TAG_CMP path.\nAC:L - An attacker with read access can reliably trigger TAG_CMP by issuing ordinary multi-sector reads; when metadata tag comparisons span dm-bufio buffer boundaries the double-incremented hash_offset mispredicts tag boundaries without races or uncontrollable layout.\nPR:L - Table creation needs CAP_SYS_ADMIN (obtainable in a user namespace), but exploitation only requires read/write access to the mapped block device or an exported filesystem backed by it, not init-namespace root.\nUI:N - Exploitation requires only attacker-initiated reads or writes against the dm-integrity-backed storage; no additional victim actions such as mounting a filesystem or opening files beyond the attacker's own I/O are needed.\nS:U - Impact is incorrect integrity-tag verification within the host kernel's device-mapper layer, enabling undetected data tampering or spurious verification failures on the same host; it does not cross VM, container, or IOMMU security boundaries.\nC:N - The bug corrupts tag-boundary state during comparison but does not cause kernel memory disclosure, out-of-bounds reads, or use-after-free; any wrong data returned is attacker-supplied disk content, not leakage of unrelated kernel or user secrets.\nI:H - Misaligned hash_offset can accept integrity tags that should fail verification (including mixed hash/discard-filler boundaries), defeating dm-integrity's tamper detection and allowing undetected modification of protected block data.\nA:L - The same logic error can 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