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

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-05-11 22:12
VLAI
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < e63265f188ea39dcf5f546770650027528f3bd0f (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 305832c53551cfbe6e5b81ca7ee765e60f4fe8e9 (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < b5dcb41ba891b55157006cac79825c78a32b409e (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 7caf90d9ab97951a58d1de85ab7e7d7cca7a4513 (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 3fd0da4fd8851a7e62d009b7db6c4a05b092bc19 (git)
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Linux 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)
Create a notification for this product.
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{
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:26:53+00:00",
      "cve": "CVE-2026-31646",
      "id": "CVE-2026-31646",
      "initial_release_date": "2026-04-24T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31646.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.