CVE-2026-43346

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/bb3f21edc7056cdf44a7f7bd7ba65af40741838c ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/bb3f21edc7056cdf44a7f7bd7ba65af40741838cPatch
• https://git.kernel.org/stable/c/c73f365707d3b1b78b7d16e1f029020d1ae50d0fPatch
• https://git.kernel.org/stable/c/e19675b384e9dcaca1bd5e4a67b8ad136eccfbe8Patch
• https://git.kernel.org/stable/c/228497715a162d040df1617e62c3b7d0df54b235