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

Vulnerability from cvelistv5 – Published: 2026-02-14 16:27 – Updated: 2026-10-19 18:25
VLAI
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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:06 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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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            "providerMetadata": {
              "dateUpdated": "2026-10-16T15:06:43.117Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "77611cab5bdfff7a070ae574bbfba20a1de99d1b",
                  "status": "affected",
                  "version": "24ab724f8a4661b2dc8e696b41df93bdc108f7a1",
                  "versionType": "git"
                },
                {
                  "lessThan": "34b56c16efd61325d80bf1d780d0e176be662f59",
                  "status": "affected",
                  "version": "24ab724f8a4661b2dc8e696b41df93bdc108f7a1",
                  "versionType": "git"
                },
                {
                  "lessThan": "f89e33c9c37f0001b730e23b3b05ab7b1ecface2",
                  "status": "affected",
                  "version": "24ab724f8a4661b2dc8e696b41df93bdc108f7a1",
                  "versionType": "git"
                },
                {
                  "lessThan": "2447edc367800ba914acf7ddd5d250416b45fb31",
                  "status": "affected",
                  "version": "24ab724f8a4661b2dc8e696b41df93bdc108f7a1",
                  "versionType": "git"
                },
                {
                  "lessThan": "1b381a638e1851d8cfdfe08ed9cdbec5295b18c9",
                  "status": "affected",
                  "version": "24ab724f8a4661b2dc8e696b41df93bdc108f7a1",
                  "versionType": "git"
                },
                {
                  "lessThan": "31a7a0bbeb006bac2d9c81a2874825025214b6d8",
                  "status": "affected",
                  "version": "24ab724f8a4661b2dc8e696b41df93bdc108f7a1",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.15"
                },
                {
                  "lessThan": "5.15",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "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"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.70",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.18.*",
                  "status": "unaffected",
                  "version": "6.18.10",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.19",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.200",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.163",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.124",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.70",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.18.10",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.19",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "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()."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "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",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/77611cab5bdfff7a070ae574bbfba20a1de99d1b"
            },
            {
              "url": "https://git.kernel.org/stable/c/34b56c16efd61325d80bf1d780d0e176be662f59"
            },
            {
              "url": "https://git.kernel.org/stable/c/f89e33c9c37f0001b730e23b3b05ab7b1ecface2"
            },
            {
              "url": "https://git.kernel.org/stable/c/2447edc367800ba914acf7ddd5d250416b45fb31"
            },
            {
              "url": "https://git.kernel.org/stable/c/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9"
            },
            {
              "url": "https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8"
            }
          ],
          "title": "dpaa2-switch: add bounds check for if_id in IRQ handler",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2026-23180",
        "datePublished": "2026-02-14T16:27:11.463Z",
        "dateReserved": "2026-01-13T15:37:45.984Z",
        "dateUpdated": "2026-10-19T18:25:34.438Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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