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CVE-2026-90007 (GCVE-0-2026-90007)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:33 – Updated: 2026-09-16 14:41
VLAI
Title
scsi: pm8001: Use rollback index when freeing MSI-X vectors
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Use rollback index when freeing MSI-X vectors pm8001_request_msix() unwinds previously registered handlers with free_irq() when request_irq() fails. The rollback loop uses the failing index i for every iteration instead of the already registered vector index j. That passes the wrong IRQ/dev_id pair to free_irq() and leaves the earlier handlers installed. Use j for both pci_irq_vector() and the matching irq_vector entry in the rollback loop.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < f39e3ca1f688d7c08954a0794e9bf1e279c83b15 (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < a980dec7c69990e4f119bcf6a2ea093d1c4975e8 (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < 0205db768570f9a46b20912afa581a0c7a63d8b7 (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < 2853ce9c88e0e6dd575f95f28b3a8c2b27164115 (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < fb22a8d2f3ac6665cc8bee197096b6675cac1a9f (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < dd817463c9b42a3a9e23d15b86c6c77a6cfb809d (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < e20b16aa3b49f9db5510940740255a987e6f2a6f (git)
Affected: a76037ff3479ad333a2505061915f7a21e7f3fb6 , < 3f92a64545165bdbb36dee8fa35626b295463313 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.51 , ≤ 6.18.* (semver)
Unaffected: 7.2.5 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/pm8001/pm8001_init.c"
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              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                  "versionEndExcluding": "7.3-rc2",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "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 \u2192 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\u0027s 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-\u003edrv_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."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:41:21.926Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
        },
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          "url": "https://git.kernel.org/stable/c/fb22a8d2f3ac6665cc8bee197096b6675cac1a9f"
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        },
        {
          "url": "https://git.kernel.org/stable/c/3f92a64545165bdbb36dee8fa35626b295463313"
        }
      ],
      "title": "scsi: pm8001: Use rollback index when freeing MSI-X vectors",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90007",
    "datePublished": "2026-09-16T10:33:16.098Z",
    "dateReserved": "2026-09-11T19:38:34.781Z",
    "dateUpdated": "2026-09-16T14:41:21.926Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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    "epss": {
      "cve": "CVE-2026-90007",
      "date": "2026-09-17",
      "epss": "0.00164",
      "percentile": "0.06017"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-17T01:08:37.000Z",
      "cve": "CVE-2026-90007",
      "id": "msrc_CVE-2026-90007",
      "initial_release_date": "2026-09-17T01:08:37.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "scsi: pm8001: Use rollback index when freeing MSI-X vectors",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90007.json",
      "version": "1"
    },
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Use j for both pci_irq_vector() and the\\nmatching irq_vector entry in the rollback loop.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/scsi/pm8001/pm8001_init.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"f39e3ca1f688d7c08954a0794e9bf1e279c83b15\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"a980dec7c69990e4f119bcf6a2ea093d1c4975e8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"0205db768570f9a46b20912afa581a0c7a63d8b7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"2853ce9c88e0e6dd575f95f28b3a8c2b27164115\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"fb22a8d2f3ac6665cc8bee197096b6675cac1a9f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"dd817463c9b42a3a9e23d15b86c6c77a6cfb809d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"e20b16aa3b49f9db5510940740255a987e6f2a6f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a76037ff3479ad333a2505061915f7a21e7f3fb6\",\"lessThan\":\"3f92a64545165bdbb36dee8fa35626b295463313\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/scsi/pm8001/pm8001_init.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.270\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.221\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.110\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.51\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.5\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0205db768570f9a46b20912afa581a0c7a63d8b7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2853ce9c88e0e6dd575f95f28b3a8c2b27164115\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f92a64545165bdbb36dee8fa35626b295463313\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a980dec7c69990e4f119bcf6a2ea093d1c4975e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dd817463c9b42a3a9e23d15b86c6c77a6cfb809d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e20b16aa3b49f9db5510940740255a987e6f2a6f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f39e3ca1f688d7c08954a0794e9bf1e279c83b15\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fb22a8d2f3ac6665cc8bee197096b6675cac1a9f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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