Vulnerability-Lookup

GHSA-PMXM-X3P3-W327

Vulnerability from github – Published: 2026-02-14 18:30 – Updated: 2026-04-03 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

dpaa2-switch: add bounds check for if_id in IRQ handler

The IRQ handler extracts if_id from the upper 16 bits of the hardware status register and uses it to index into ethsw->ports[] without validation. Since if_id can be any 16-bit value (0-65535) but the ports array is only allocated with sw_attr.num_ifs elements, this can lead to an out-of-bounds read potentially.

Add a bounds check before accessing the array, consistent with the existing validation in dpaa2_switch_rx().

Severity

7.0 (High)


                  
                    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23180"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-14T17:15:55Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: add bounds check for if_id in IRQ handler\n\nThe IRQ handler extracts if_id from the upper 16 bits of the hardware\nstatus register and uses it to index into ethsw-\u003eports[] without\nvalidation. Since if_id can be any 16-bit value (0-65535) but the ports\narray is only allocated with sw_attr.num_ifs elements, this can lead to\nan out-of-bounds read potentially.\n\nAdd a bounds check before accessing the array, consistent with the\nexisting validation in dpaa2_switch_rx().",
  "id": "GHSA-pmxm-x3p3-w327",
  "modified": "2026-04-03T15:30:29Z",
  "published": "2026-02-14T18:30:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23180"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2447edc367800ba914acf7ddd5d250416b45fb31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34b56c16efd61325d80bf1d780d0e176be662f59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77611cab5bdfff7a070ae574bbfba20a1de99d1b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f89e33c9c37f0001b730e23b3b05ab7b1ecface2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-23180 (GCVE-0-2026-23180)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:27 – Updated: 2026-08-05 12:20

Title

dpaa2-switch: add bounds check for if_id in IRQ handler

Summary

In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: add bounds check for if_id in IRQ handler The IRQ handler extracts if_id from the upper 16 bits of the hardware status register and uses it to index into ethsw->ports[] without validation. Since if_id can be any 16-bit value (0-65535) but the ports array is only allocated with sw_attr.num_ifs elements, this can lead to an out-of-bounds read potentially. Add a bounds check before accessing the array, consistent with the existing validation in dpaa2_switch_rx().

Severity

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/77611cab5bdfff7a0…
https://git.kernel.org/stable/c/34b56c16efd61325d…
https://git.kernel.org/stable/c/f89e33c9c37f0001b…
https://git.kernel.org/stable/c/2447edc367800ba91…
https://git.kernel.org/stable/c/1b381a638e1851d8c…
https://git.kernel.org/stable/c/31a7a0bbeb006bac2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 , < 77611cab5bdfff7a070ae574bbfba20a1de99d1b (git) Affected: 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 , < 34b56c16efd61325d80bf1d780d0e176be662f59 (git) Affected: 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 , < f89e33c9c37f0001b730e23b3b05ab7b1ecface2 (git) Affected: 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 , < 2447edc367800ba914acf7ddd5d250416b45fb31 (git) Affected: 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 , < 1b381a638e1851d8cfdfe08ed9cdbec5295b18c9 (git) Affected: 24ab724f8a4661b2dc8e696b41df93bdc108f7a1 , < 31a7a0bbeb006bac2d9c81a2874825025214b6d8 (git)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.200 , ≤ 5.15.* (semver) Unaffected: 6.1.163 , ≤ 6.1.* (semver) Unaffected: 6.6.124 , ≤ 6.6.* (semver) Unaffected: 6.12.70 , ≤ 6.12.* (semver) Unaffected: 6.18.10 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "77611cab5bdfff7a070ae574bbfba20a1de99d1b",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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              "version": "5.15"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.15.200",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.124",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
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            {
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: add bounds check for if_id in IRQ handler\n\nThe IRQ handler extracts if_id from the upper 16 bits of the hardware\nstatus register and uses it to index into ethsw-\u003eports[] without\nvalidation. Since if_id can be any 16-bit value (0-65535) but the ports\narray is only allocated with sw_attr.num_ifs elements, this can lead to\nan out-of-bounds read potentially.\n\nAdd a bounds check before accessing the array, consistent with the\nexisting validation in dpaa2_switch_rx()."
        }
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            "version": "3.1"
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is in a hardware IRQ handler for NXP DPAA2 Ethernet switch hardware. The if_id comes from MC firmware via hardware registers, requiring at minimum local access to the system running this hardware. Not remotely triggerable via network packets.\nAC:H - The attacker cannot control the if_id value returned by the MC firmware in the IRQ status register. Triggering an out-of-bounds if_id requires a firmware bug or hardware anomaly, which are conditions beyond the attacker\u0027s control.\nPR:L - While the IRQ fires from hardware events, a local user on a system with DPAA2 hardware could potentially trigger link state change events. No special privileges beyond basic local access are required to cause network interface events.\nUI:N - No user interaction is required. The IRQ handler fires automatically in response to hardware events without any user action.\nS:U - The vulnerability affects the kernel in its own security context. There is no crossing of security boundaries such as VM escape or IOMMU bypass.\nC:H - The OOB read on the heap-allocated ports pointer array (up to 64K entries beyond bounds) reads arbitrary kernel heap memory. The dereferenced pointer then accesses further arbitrary memory, potentially disclosing kernel data.\nI:H - The OOB-read pointer is dereferenced and used to call functions that modify port state (link state update, MAC address set, MAC connect/disconnect). If the OOB-read pointer happens to point to attacker-influenced memory, this could enable arbitrary writes.\nA:H - Dereferencing a garbage pointer read from OOB heap memory will almost certainly cause a kernel crash (oops or panic), resulting in complete denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:20:30.334Z",
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        },
        {
          "url": "https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8"
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      ],
      "title": "dpaa2-switch: add bounds check for if_id in IRQ handler",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23180",
    "datePublished": "2026-02-14T16:27:11.463Z",
    "dateReserved": "2026-01-13T15:37:45.984Z",
    "dateUpdated": "2026-08-05T12:20:30.334Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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