{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72100", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.905Z", "datePublished": "2026-08-15T05:52:44.923Z", "dateUpdated": "2026-10-19T21:19:27.814Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:40:15.688Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: fix a bug if the bio is out of limits\n\nIf dm_integrity_check_limits fails, the code would exit with\nDM_MAPIO_KILL. However, the range would be already locked at this point,\nand it wouldn't be unlocked, resulting in a deadlock. Let's move the\nlimit check up, so that when it exits, no resources are leaked." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The bug is hit in dm_integrity_map_inline() on block I/O to dm-integrity inline volumes; in enterprise/cloud deployments those volumes are commonly exported over network block protocols (iSCSI, NVMe-oF, NBD), letting a remote initiator drive the vulnerable map path.\nAC:L - During SB_FLAG_RECALCULATING the attacker can reliably issue concurrent I/O ahead of the recalc cursor that fails dm_integrity_check_limits (e.g., block-aligned totals with misaligned bvecs), acquiring integrity_range_locked before DM_MAPIO_KILL without cleanup.\nPR:L - Exploitation requires submitting crafted block I/O to the dm-integrity device—available to unprivileged users with device access (disk group), CAP_SYS_ADMIN in a user namespace that can create dm targets, or authenticated remote block-storage clients—not fully unauthenticated network access.\nUI:N - Triggering the flaw needs only attacker-initiated block I/O during recalculation; no victim interaction such as opening files or mounting filesystems is required.\nS:U - Impact is kernel heap corruption, deadlock, and privilege escalation within the host kernel security domain; it does not cross a VM/hypervisor or IOMMU boundary.\nC:H - On DM_MAPIO_KILL the dm core frees the bio/per-io dm_integrity_io while dio->range remains in ic->in_progress, creating a use-after-free that can be leveraged for arbitrary kernel memory disclosure via subsequent tree walks.\nI:H - The dangling dm_integrity_range node in the red-black tree enables heap metadata corruption and attacker-controlled reuse of freed dm_integrity_io memory, supporting arbitrary kernel write and local privilege escalation.\nA:H - The leaked range lock permanently blocks overlapping I/O (uninterruptible waits/deadlock), and UAF on in_progress tree operations can cause kernel oops/panic, producing severe and persistent loss of availability." } ] } ], "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": "fb0987682c629c1d2c476f35f6fde405a5e304a4", "lessThan": "f7989286175f32db8605e767a1a2efc62e894dc8", "status": "affected", "versionType": "git" }, { "version": "fb0987682c629c1d2c476f35f6fde405a5e304a4", "lessThan": "aa5113e7155f4ea81d2c0303ab5cb272d4b32627", "status": "affected", "versionType": "git" }, { "version": "fb0987682c629c1d2c476f35f6fde405a5e304a4", "lessThan": "3d1afaa074622859678b1a1e7c1b9c0af74c89b0", "status": "affected", "versionType": "git" }, { "version": "fb0987682c629c1d2c476f35f6fde405a5e304a4", "lessThan": "5a266764fadaff8b5c1fe37a186ebf9b09cb953e", "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/md/dm-integrity.c" ], "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "6.11", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f7989286175f32db8605e767a1a2efc62e894dc8" }, { "url": "https://git.kernel.org/stable/c/aa5113e7155f4ea81d2c0303ab5cb272d4b32627" }, { "url": "https://git.kernel.org/stable/c/3d1afaa074622859678b1a1e7c1b9c0af74c89b0" }, { "url": "https://git.kernel.org/stable/c/5a266764fadaff8b5c1fe37a186ebf9b09cb953e" } ], "title": "dm-integrity: fix a bug if the bio is out of limits", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-72100", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-10-16T15:51:56.986818Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T21:19:27.814Z" } } ] } }