Vulnerability-Lookup

GHSA-VV8C-R99F-F6Q8

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-04-24 15:32

Details

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

net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()

page_pool_create() can return an ERR_PTR on failure. The return value is used unconditionally in the loop that follows, passing the error pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(), which dereferences it, causing a kernel oops.

Add an IS_ERR check after page_pool_create() to return early on failure.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31646"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()\n\npage_pool_create() can return an ERR_PTR on failure. The return value\nis used unconditionally in the loop that follows, passing the error\npointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(),\nwhich dereferences it, causing a kernel oops.\n\nAdd an IS_ERR check after page_pool_create() to return early on failure.",
  "id": "GHSA-vv8c-r99f-f6q8",
  "modified": "2026-04-24T15:32:36Z",
  "published": "2026-04-24T15:32:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31646"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31646 (GCVE-0-2026-31646)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-04-24 14:44

Title

net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()

Summary

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() page_pool_create() can return an ERR_PTR on failure. The return value is used unconditionally in the loop that follows, passing the error pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(), which dereferences it, causing a kernel oops. Add an IS_ERR check after page_pool_create() to return early on failure.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/e63265f188ea39dcf…
	https://git.kernel.org/stable/c/305832c53551cfbe6…
	https://git.kernel.org/stable/c/b5dcb41ba891b5515…
	https://git.kernel.org/stable/c/7caf90d9ab97951a5…
	https://git.kernel.org/stable/c/3fd0da4fd8851a7e6…

Impacted products

Vendor

Product

Version

Linux

Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < e63265f188ea39dcf5f546770650027528f3bd0f (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 305832c53551cfbe6e5b81ca7ee765e60f4fe8e9 (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < b5dcb41ba891b55157006cac79825c78a32b409e (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 7caf90d9ab97951a58d1de85ab7e7d7cca7a4513 (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 3fd0da4fd8851a7e62d009b7db6c4a05b092bc19 (git)

Linux

Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.135 , ≤ 6.6.* (semver)
Unaffected: 6.12.82 , ≤ 6.12.* (semver)
Unaffected: 6.18.23 , ≤ 6.18.* (semver)
Unaffected: 6.19.13 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e63265f188ea39dcf5f546770650027528f3bd0f",
              "status": "affected",
              "version": "11871aba19748b3387e83a2db6360aa7119e9a1a",
              "versionType": "git"
            },
            {
              "lessThan": "305832c53551cfbe6e5b81ca7ee765e60f4fe8e9",
              "status": "affected",
              "version": "11871aba19748b3387e83a2db6360aa7119e9a1a",
              "versionType": "git"
            },
            {
              "lessThan": "b5dcb41ba891b55157006cac79825c78a32b409e",
              "status": "affected",
              "version": "11871aba19748b3387e83a2db6360aa7119e9a1a",
              "versionType": "git"
            },
            {
              "lessThan": "7caf90d9ab97951a58d1de85ab7e7d7cca7a4513",
              "status": "affected",
              "version": "11871aba19748b3387e83a2db6360aa7119e9a1a",
              "versionType": "git"
            },
            {
              "lessThan": "3fd0da4fd8851a7e62d009b7db6c4a05b092bc19",
              "status": "affected",
              "version": "11871aba19748b3387e83a2db6360aa7119e9a1a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.135",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.135",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.82",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.23",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.13",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()\n\npage_pool_create() can return an ERR_PTR on failure. The return value\nis used unconditionally in the loop that follows, passing the error\npointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(),\nwhich dereferences it, causing a kernel oops.\n\nAdd an IS_ERR check after page_pool_create() to return early on failure."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-24T14:44:59.874Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409e"
        },
        {
          "url": "https://git.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513"
        },
        {
          "url": "https://git.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19"
        }
      ],
      "title": "net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31646",
    "datePublished": "2026-04-24T14:44:59.874Z",
    "dateReserved": "2026-03-09T15:48:24.127Z",
    "dateUpdated": "2026-04-24T14:44:59.874Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-VV8C-R99F-F6Q8

CVE-2026-31646 (GCVE-0-2026-31646)

Tags

Sightings

Nomenclature