CVE-2023-54326 (GCVE-0-2023-54326)
Vulnerability from cvelistv5
Published
2025-12-30 12:37
Modified
2026-08-05 09:19
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: pci_endpoint_test: Free IRQs before removing the device In pci_endpoint_test_remove(), freeing the IRQs after removing the device creates a small race window for IRQs to be received with the test device memory already released, causing the IRQ handler to access invalid memory, resulting in an oops. Free the device IRQs before removing the device to avoid this issue.
References
Impacted products
Vendor Product Version
Linux Linux Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
Version: e03327122e2c8e6ae4565ef5b3d3cbe4364546a1
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/pci_endpoint_test.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fb7f8bdb886f2ebf35ee5edaf2bf5f02b063ddb7",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            },
            {
              "lessThan": "dd2210379205fcd23a9d8869b0cef90e3770577c",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            },
            {
              "lessThan": "cdf9a7e2cdc7a5464e3cc6d0b715ba2b1d215521",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            },
            {
              "lessThan": "14bdee38e96c7d37ca15e7bea50411eee25fe315",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            },
            {
              "lessThan": "c2dba13bc0c62b79a3cbe4bfe5faa32231bf9b55",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            },
            {
              "lessThan": "38d12bcf4e2ce3d285eb29644a79a54f42040fab",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            },
            {
              "lessThan": "f61b7634a3249d12b9daa36ffbdb9965b6f24c6c",
              "status": "affected",
              "version": "e03327122e2c8e6ae4565ef5b3d3cbe4364546a1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/misc/pci_endpoint_test.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.251",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.291",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.251",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.188",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.121",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.40",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.5",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: pci_endpoint_test: Free IRQs before removing the device\n\nIn pci_endpoint_test_remove(), freeing the IRQs after removing the device\ncreates a small race window for IRQs to be received with the test device\nmemory already released, causing the IRQ handler to access invalid memory,\nresulting in an oops.\n\nFree the device IRQs before removing the device to avoid this issue."
        }
      ],
      "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 vulnerable window is opened by a local driver-removal event (sysfs unbind/rmmod/hot-unplug) and the interrupt storm that hits it is driven through local interfaces \u2014 the `/dev/pci-endpoint-test.N` ioctls that command the endpoint to raise MSI/MSI-X/legacy IRQs. There is no network-reachable path to this host-side test driver.\nAC:L - The attacker controls the interrupt side of the race directly and continuously (looping `PCITEST_MSI`/`PCITEST_LEGACY_IRQ`, or free-running MSIs from the attached endpoint), so the handler is guaranteed to be in flight whenever teardown runs; `IRQF_SHARED` legacy lines widen it further, and the race can be retried on every unbind cycle.\nPR:L - No capability check exists anywhere in `pci_endpoint_test_ioctl()` or the IRQ path \u2014 an unprivileged local context with the device node open sustains the interrupt stream that lands in the window, and the removal side is a routine hot-unplug/unbind event rather than a privilege the attacker must hold.\nUI:N - Nothing requires a victim to open a file, mount a filesystem, or interact with attacker-supplied content; the race is won purely by the attacker\u0027s own interrupt generation against a system/administrative removal event.\nS:U - The dangling iomem and heap accesses stay entirely within the kernel\u0027s own security authority \u2014 no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - `kfree(test-\u003ename)` leaves `irqaction-\u003ename` dangling while the IRQ is still registered, so freed kernel heap contents are rendered to userspace via `/proc/interrupts`, and the handler\u0027s `readl()` through the unmapped `test-\u003ebase` can read a recycled vmalloc/ioremap mapping \u2014 a use-after-free read primitive.\nI:H - The handler performs `writel(test, PCI_ENDPOINT_TEST_STATUS, reg)` through the already-`pci_iounmap()`\u0027d pointer, a stale-pointer write into a virtual range that a concurrent `ioremap()`/`vmalloc()` may already own; per use-after-free treatment this is exploitable for memory corruption and control-flow influence.\nA:H - The commit states the outcome explicitly \u2014 the IRQ handler touches released device memory and the kernel oopses; a fault taken in hard-IRQ context during device teardown is an immediate crash."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:19:17.990Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fb7f8bdb886f2ebf35ee5edaf2bf5f02b063ddb7"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd2210379205fcd23a9d8869b0cef90e3770577c"
        },
        {
          "url": "https://git.kernel.org/stable/c/cdf9a7e2cdc7a5464e3cc6d0b715ba2b1d215521"
        },
        {
          "url": "https://git.kernel.org/stable/c/14bdee38e96c7d37ca15e7bea50411eee25fe315"
        },
        {
          "url": "https://git.kernel.org/stable/c/c2dba13bc0c62b79a3cbe4bfe5faa32231bf9b55"
        },
        {
          "url": "https://git.kernel.org/stable/c/38d12bcf4e2ce3d285eb29644a79a54f42040fab"
        },
        {
          "url": "https://git.kernel.org/stable/c/f61b7634a3249d12b9daa36ffbdb9965b6f24c6c"
        }
      ],
      "title": "misc: pci_endpoint_test: Free IRQs before removing the device",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54326",
    "datePublished": "2025-12-30T12:37:09.698Z",
    "dateReserved": "2025-12-30T12:35:56.209Z",
    "dateUpdated": "2026-08-05T09:19:17.990Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.