CVE-2026-43346 Details
Description
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.
A vulnerability in the Linux kernel's ice driver related to Precision Time Protocol (PTP) handling has been addressed. In Virtual Function I/O (VFIO) passthrough setups, it is possible to pass through a Physical Function (PF) that does not control the source timer. This situation leads to the PTP controlling PF not being initialized in the virtual machine, causing a warning to be triggered when the absence of a controlling PF is detected. The warning has been replaced with an informational message, and the function now returns a 'not supported' error, aligning the behavior with the expected configuration.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the updated kernel can be found on the Linux Kernel Archives.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/bb3f21edc7056cdf44a7f7bd7ba65af40741838c | kernel.org | Patch |
| https://git.kernel.org/stable/c/c73f365707d3b1b78b7d16e1f029020d1ae50d0f | kernel.org | Patch |
| https://git.kernel.org/stable/c/e19675b384e9dcaca1bd5e4a67b8ad136eccfbe8 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-617 | Reachable Assertion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.12.11, < 6.13 >= 6.13, < 6.18.24 >= 6.19, < 6.19.14 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | kernel.org |