{"api_version":"1","generated_at":"2026-08-22T07:08:03+00:00","cve":"CVE-2026-72100","urls":{"html":"https://cve.report/CVE-2026-72100","api":"https://cve.report/api/cve/CVE-2026-72100.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72100","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72100"},"summary":{"title":"dm-integrity: fix a bug if the bio is out of limits","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:21:24","updated_at":"2026-08-17 06:18:08"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/aa5113e7155f4ea81d2c0303ab5cb272d4b32627","name":"https://git.kernel.org/stable/c/aa5113e7155f4ea81d2c0303ab5cb272d4b32627","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d1afaa074622859678b1a1e7c1b9c0af74c89b0","name":"https://git.kernel.org/stable/c/3d1afaa074622859678b1a1e7c1b9c0af74c89b0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5a266764fadaff8b5c1fe37a186ebf9b09cb953e","name":"https://git.kernel.org/stable/c/5a266764fadaff8b5c1fe37a186ebf9b09cb953e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f7989286175f32db8605e767a1a2efc62e894dc8","name":"https://git.kernel.org/stable/c/f7989286175f32db8605e767a1a2efc62e894dc8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72100","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72100","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb0987682c629c1d2c476f35f6fde405a5e304a4 f7989286175f32db8605e767a1a2efc62e894dc8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb0987682c629c1d2c476f35f6fde405a5e304a4 aa5113e7155f4ea81d2c0303ab5cb272d4b32627 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb0987682c629c1d2c476f35f6fde405a5e304a4 3d1afaa074622859678b1a1e7c1b9c0af74c89b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb0987682c629c1d2c476f35f6fde405a5e304a4 5a266764fadaff8b5c1fe37a186ebf9b09cb953e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72100","cve":"CVE-2026-72100","epss":"0.005600000","percentile":"0.439280000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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":"f7989286175f32db8605e767a1a2efc62e894dc8","status":"affected","version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","versionType":"git"},{"lessThan":"aa5113e7155f4ea81d2c0303ab5cb272d4b32627","status":"affected","version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","versionType":"git"},{"lessThan":"3d1afaa074622859678b1a1e7c1b9c0af74c89b0","status":"affected","version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","versionType":"git"},{"lessThan":"5a266764fadaff8b5c1fe37a186ebf9b09cb953e","status":"affected","version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","versionType":"git"}]},{"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":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"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."}]}],"providerMetadata":{"dateUpdated":"2026-08-17T05:40:15.688Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72100","datePublished":"2026-08-15T05:52:44.923Z","dateReserved":"2026-08-09T03:40:39.905Z","dateUpdated":"2026-08-17T05:40:15.688Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:21:24","lastModifiedDate":"2026-08-17 06:18:08","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72100","Ordinal":"1","Title":"dm-integrity: fix a bug if the bio is out of limits","CVE":"CVE-2026-72100","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72100","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"dm-integrity: fix a bug if the bio is out of limits"}]}}}