{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-90007", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.781Z", "datePublished": "2026-09-16T10:33:16.098Z", "dateUpdated": "2026-10-19T08:56:21.169Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:56:21.169Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Use rollback index when freeing MSI-X vectors\n\npm8001_request_msix() unwinds previously registered handlers with\nfree_irq() when request_irq() fails. The rollback loop uses the failing\nindex i for every iteration instead of the already registered vector\nindex j.\n\nThat passes the wrong IRQ/dev_id pair to free_irq() and leaves the\nearlier handlers installed. Use j for both pci_irq_vector() and the\nmatching irq_vector entry in the rollback loop." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is in pm8001_request_msix() on the PCI SAS HBA probe and resume path (pm8001_pci_probe/pm8001_pci_resume → pm8001_alloc/pm8001_request_irq), not in network, FC, or USB packet processing; PMC-Sierra/Microchip/ATTO/Adaptec SPCv controllers are local PCI devices in storage servers and workstations.\nAC:L - Once request_irq() fails after any earlier MSI-X vector succeeded, rollback always free_irq()s the failing index i instead of registered index j, then pci_free_irq_vectors() and kfree of the HBA; a local attacker can induce that partial failure with memory or IRQ exhaustion and does not depend on an uncontrolled race.\nPR:L - An unprivileged local user on a machine with a multi-vector SPCv pm8001 HBA can apply memory pressure during probe, deferred probe, or resume so a later request_irq() fails, then spray the heap against the leftover IRQ handler; PCI bind/unbind needs init-namespace root but is not required to exploit the planted UAF.\nUI:N - No victim must mount a filesystem, open a device, or plug hardware; the attacker induces the MSI-X request failure and consumes the leftover handler without another user's action.\nS:U - The leftover irqaction and use-after-free of pm8001_hba_info stay in the host kernel IRQ/SCSI path and do not cross a VM, IOMMU, or other security-authority boundary.\nC:H - Failed MSI-X registration leaves pm8001_interrupt_handler_msix installed with dev_id pointing into pm8001_ha, which pm8001_free() then kfree()s, a use-after-free that per kernel CNA guidance enables arbitrary kernel memory disclosure via slab reuse.\nI:H - The same dangling MSI-X handler reads irq_vector->drv_inst and invokes isr/tasklet on the freed HBA object; reclaiming that heap allocation yields write and control-flow hijack primitives, so integrity impact is High.\nA:H - Wrong-index free_irq() hits WARN on an already-free IRQ, pci_free_irq_vectors() tears down descriptors with live irqactions, and a later IRQ or panic_on_warn can oops or panic the kernel, fully denying availability." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/pm8001/pm8001_init.c" ], "versions": [ { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "f39e3ca1f688d7c08954a0794e9bf1e279c83b15", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "a980dec7c69990e4f119bcf6a2ea093d1c4975e8", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "0205db768570f9a46b20912afa581a0c7a63d8b7", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "2853ce9c88e0e6dd575f95f28b3a8c2b27164115", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "fb22a8d2f3ac6665cc8bee197096b6675cac1a9f", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "dd817463c9b42a3a9e23d15b86c6c77a6cfb809d", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "e20b16aa3b49f9db5510940740255a987e6f2a6f", "status": "affected", "versionType": "git" }, { "version": "a76037ff3479ad333a2505061915f7a21e7f3fb6", "lessThan": "3f92a64545165bdbb36dee8fa35626b295463313", "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/scsi/pm8001/pm8001_init.c" ], "versions": [ { "version": "4.11", "status": "affected" }, { "version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.5", "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": "4.11", "versionEndExcluding": "5.10.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.18.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.2.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f39e3ca1f688d7c08954a0794e9bf1e279c83b15" }, { "url": "https://git.kernel.org/stable/c/a980dec7c69990e4f119bcf6a2ea093d1c4975e8" }, { "url": "https://git.kernel.org/stable/c/0205db768570f9a46b20912afa581a0c7a63d8b7" }, { "url": "https://git.kernel.org/stable/c/2853ce9c88e0e6dd575f95f28b3a8c2b27164115" }, { "url": "https://git.kernel.org/stable/c/fb22a8d2f3ac6665cc8bee197096b6675cac1a9f" }, { "url": "https://git.kernel.org/stable/c/dd817463c9b42a3a9e23d15b86c6c77a6cfb809d" }, { "url": "https://git.kernel.org/stable/c/e20b16aa3b49f9db5510940740255a987e6f2a6f" }, { "url": "https://git.kernel.org/stable/c/3f92a64545165bdbb36dee8fa35626b295463313" } ], "title": "scsi: pm8001: Use rollback index when freeing MSI-X vectors", "x_generator": { "engine": "bippy-1.2.0" } } } }