Vulnerability-Lookup

GHSA-J482-JX6V-W2PF

Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-18 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98571"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:09Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: clear stale buf-\u003epage 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-\u003epage 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-\u003epage on the napi_build_skb() failure path to keep the buffer\nlifecycle consistent with the other consumption sites.",
  "id": "GHSA-j482-jx6v-w2pf",
  "modified": "2026-10-18T18:31:54Z",
  "published": "2026-10-18T18:31:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98571"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a7822e34a0bfde31b194ac3da3253e5032b44cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/298673397ea3f6f5811b84f0d9f71eac71dda2e3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/501baaeca7d128fa0a2f6953cf5873c5b0d7cf89"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98571 (GCVE-0-2026-98571)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:21

Title

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

Summary

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.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/501baaeca7d128fa0…
https://git.kernel.org/stable/c/298673397ea3f6f58…
https://git.kernel.org/stable/c/0a7822e34a0bfde31…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: df542f669307918f054a17878ff6dd1ddbb2fe18 , < 501baaeca7d128fa0a2f6953cf5873c5b0d7cf89 (git) Affected: df542f669307918f054a17878ff6dd1ddbb2fe18 , < 298673397ea3f6f5811b84f0d9f71eac71dda2e3 (git) Affected: df542f669307918f054a17878ff6dd1ddbb2fe18 , < 0a7822e34a0bfde31b194ac3da3253e5032b44cc (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.55 , ≤ 6.18.* (semver) Unaffected: 7.2.9 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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