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ice: ptp: don't WARN when controlling PF is unavailable

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: ice: ptp: don't WARN when controlling PF is unavailable In VFIO passthrough setups, it is possible to pass through only a PF which doesn't own the source timer. In that case the PTP controlling PF (adapter->ctrl_pf) is never initialized in the VM, so ice_get_ctrl_ptp() returns NULL and triggers WARN_ON() in ice_ptp_setup_pf(). Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.12.114, 6.18.24, 6.19.14
CVEs
CVE-2026-43346
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 16:29 UTC · Revision 1

Source evidence

ice: ptp: don't WARN when controlling PF is unavailable

core-osv · Original source

Published 8 May 2026, 13:39 UTC

In the Linux kernel, the following vulnerability has been resolved: ice: ptp: don't WARN when controlling PF is unavailable In VFIO passthrough setups, it is possible to pass through only a PF which doesn't own the source timer. In that case the PTP controlling PF (adapter->ctrl_pf) is never initialized in the VM, so ice_get_ctrl_ptp() returns NULL and triggers WARN_ON() in ice_ptp_setup_pf(). Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

osv:CVE-2026-43346

Kernel

Fixed versions: 6.12.114, 6.18.24, 6.19.14

Complete source record
{
  "id": "f2138010e500d75c08b689dd33b8c1e6e82117e7bc9f9b0dd7515cc9176ec42e",
  "url": "https://osv.dev/vulnerability/CVE-2026-43346",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ice: ptp: don't WARN when controlling PF is unavailable",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ice: ptp: don't WARN when controlling PF is unavailable In VFIO passthrough setups, it is possible to pass through only a PF which doesn't own the source timer. In that case the PTP controlling PF (adapter->ctrl_pf) is never initialized in the VM, so ice_get_ctrl_ptp() returns NULL and triggers WARN_ON() in ice_ptp_setup_pf(). Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.",
    "evidence": "osv:CVE-2026-43346",
    "products": [
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        "name": {
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            "evidence": "/affected/1/ranges"
          }
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        "affected_versions": []
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    "severity": "unknown",
    "structured": {
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      "aliases": [
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      ],
      "modified": "2026-10-28T02:30:30.457234938Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/228497715a162d040df1617e62c3b7d0df54b235",
        "https://git.kernel.org/stable/c/bb3f21edc7056cdf44a7f7bd7ba65af40741838c",
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        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43346.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43346",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
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        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43346.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2026-43346",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 497370,
  "published_at": "2026-05-08T13:39:31.93+00:00"
}