{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72289", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.917Z", "datePublished": "2026-08-15T05:55:10.870Z", "dateUpdated": "2026-10-16T18:55:15.201Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:24.760Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic: Check the interrupt is still ours before migrating it\n\nvgic_prune_ap_list() drops both ap_list_lock and irq_lock while migrating\nan interrupt to another vCPU. After reacquiring the locks it only checks\nthat the affinity is unchanged (target_vcpu == vgic_target_oracle(irq))\nbefore moving the interrupt, which assumes that an interrupt whose affinity\nis preserved is still queued on this vCPU's ap_list.\n\nThat assumption no longer holds if the interrupt is taken off the ap_list\nwhile the locks are dropped. vgic_flush_pending_lpis() removes the\ninterrupt from the list and sets irq->vcpu to NULL, but leaves\nenabled/pending/target_vcpu untouched. As the interrupt is still enabled\nand pending, vgic_target_oracle() returns the same target_vcpu, so the\naffinity check passes and list_del() is run a second time on an entry that\nhas already been removed.\n\nAlso check that the interrupt is still assigned to this vCPU\n(irq->vcpu == vcpu) before moving it." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.3, "baseSeverity": "CRITICAL" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached only from KVM guest execution paths—GICv3 redistributor GICR_CTLR LPI-disable MMIO traps into vgic_flush_pending_lpis() and vCPU exit/sync paths into vgic_prune_ap_list()—not from any remote network, adjacent-radio, or physical-device interface on the host.\nAC:L - A malicious multi-vCPU guest controls both racing sides by pinning threads, changing LPI affinity via ITS so an interrupt must migrate off one vCPU's ap_list, and concurrently disabling LPIS on that redistributor; the attacker creates the window rather than depending on uncontrollable host timing or memory layout.\nPR:N - The highest-impact scenario is a malicious cloud VM tenant on arm64 KVM who needs no host privileges beyond code already running inside the assigned guest; exploitation uses guest-kernel GIC MMIO/ITS operations, not host root, CAP_SYS_ADMIN in the init namespace, or additional /dev/kvm access beyond having a VM.\nUI:N - Exploitation is fully attacker-driven from within the guest VM through deliberate LPI setup, affinity changes, and timed GICR_CTLR writes; no victim user or administrator action on the host is required beyond normal VM operation.\nS:C - Double list_del()/list_add_tail() on host-kernel ap_list linkages corrupts KVM VGIC state from guest-controlled interrupt operations, crossing the guest-to-host virtualization security boundary with VM-escape-class impact rather than confining damage to the attacker's VM.\nC:H - Corrupting detached ap_list pointers and inserting them into another vCPU's ap_list_head enables out-of-bounds kernel linked-list traversal and disclosure of adjacent kmalloc slab memory (struct vgic_irq and neighboring objects); per kernel guidance, this list corruption is leverageable for arbitrary host memory read primitives.\nI:H - The vulnerable path performs list_del() on an already removed entry and may follow with list_add_tail() onto another vCPU's ap_list, letting a guest steer kernel list pointers and overwrite adjacent vgic_irq/host heap metadata for control-flow or data corruption on the hypervisor.\nA:H - Re-running list_del() on an entry already removed by vgic_flush_pending_lpis() dereferences poisoned list pointers and corrupts live ap_list_heads, causing immediate host kernel BUG/oops/panic or persistent interrupt-delivery failure during subsequent VGIC processing." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm64/kvm/vgic/vgic.c" ], "versions": [ { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "3893e1fcf6f306b327a8358dcd1cbd077989a240", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "da2d249a39a1881681c303ceea33f38ba1c5bbeb", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "654be81c4c637af12709d47c7efc3302cd336513", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "e363c0bc0226dc5ea5046a88e9a6864b82c45399", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "0658b09cba7fe866c6cd70cd2dcdfdcabe80328f", "status": "affected", "versionType": "git" }, { "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697", "lessThan": "0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm64/kvm/vgic/vgic.c" ], "versions": [ { "version": "4.7", "status": "affected" }, { "version": "0", "lessThan": "4.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "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": "4.7", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3893e1fcf6f306b327a8358dcd1cbd077989a240" }, { "url": "https://git.kernel.org/stable/c/cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc" }, { "url": "https://git.kernel.org/stable/c/da2d249a39a1881681c303ceea33f38ba1c5bbeb" }, { "url": "https://git.kernel.org/stable/c/654be81c4c637af12709d47c7efc3302cd336513" }, { "url": "https://git.kernel.org/stable/c/e363c0bc0226dc5ea5046a88e9a6864b82c45399" }, { "url": "https://git.kernel.org/stable/c/79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe" }, { "url": "https://git.kernel.org/stable/c/0658b09cba7fe866c6cd70cd2dcdfdcabe80328f" }, { "url": "https://git.kernel.org/stable/c/0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe" } ], "title": "KVM: arm64: vgic: Check the interrupt is still ours before migrating it", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-72289", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-10-16T18:45:52.646883Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:15.201Z" } } ] } }