CVE-2026-98571

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.20 %higher than 9% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

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

net: stmmac: clear stale buf->page after recycling on skb build failure

In stmmac_rx(), when napi_build_skb() fails the descriptor page is recycled back to the page pool with page_pool_recycle_direct(), but buf->page is left pointing at the recycled page, unlike every other consumption site in the function which clears the pointer after handing the page away.

With the stale pointer stmmac_rx_refill() skips the replacement allocation and programs the already-recycled page back into the RX descriptor.

Clear buf->page on the napi_build_skb() failure path to keep the buffer lifecycle consistent with the other consumption sites.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.20 %
Percentile among all scored CVEs: 9
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 3 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98571",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "df542f669307918f054a17878ff6dd1ddbb2fe18",
              "lessThan": "501baaeca7d128fa0a2f6953cf5873c5b0d7cf89",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "df542f669307918f054a17878ff6dd1ddbb2fe18",
              "lessThan": "298673397ea3f6f5811b84f0d9f71eac71dda2e3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "df542f669307918f054a17878ff6dd1ddbb2fe18",
              "lessThan": "0a7822e34a0bfde31b194ac3da3253e5032b44cc",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:09.363",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0a7822e34a0bfde31b194ac3da3253e5032b44cc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/298673397ea3f6f5811b84f0d9f71eac71dda2e3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/501baaeca7d128fa0a2f6953cf5873c5b0d7cf89",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: clear stale buf->page after recycling on skb build failure\n\nIn stmmac_rx(), when napi_build_skb() fails the descriptor page is\nrecycled back to the page pool with page_pool_recycle_direct(), but\nbuf->page is left pointing at the recycled page, unlike every other\nconsumption site in the function which clears the pointer after handing\nthe page away.\n\nWith the stale pointer stmmac_rx_refill() skips the replacement\nallocation and programs the already-recycled page back into the RX\ndescriptor.\n\nClear buf->page on the napi_build_skb() failure path to keep the buffer\nlifecycle consistent with the other consumption sites."
    }
  ],
  "lastModified": "2026-10-19T10:19:15.207",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}