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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe800654e85b5b27966fc6493201f5f8cf658beb6 < e19675b384e9dcaca1bd5e4a67b8ad136eccfbe8affected
LinuxLinuxe800654e85b5b27966fc6493201f5f8cf658beb6 < c73f365707d3b1b78b7d16e1f029020d1ae50d0faffected
LinuxLinuxe800654e85b5b27966fc6493201f5f8cf658beb6 < bb3f21edc7056cdf44a7f7bd7ba65af40741838caffected
LinuxLinux2f59743be4d9568cad2d9cf697d1b897975421edaffected
LinuxLinux6.12.11 < 6.13affected
LinuxLinux6.13affected
LinuxLinux0 < 6.13unaffected
LinuxLinux6.18.24 <= 6.18.*unaffected
LinuxLinux6.19.14 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References