CVE-2026-43346

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

5.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.11%Up 0.1 points since May 9, 2026

What each source reports

NVD Score used 5.5

In the Linux kernel, the following vulnerability has been resolved:

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

Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

Record: CVE-2026-43346
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-617
Updated: 2026-11-06

CVE List No score

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

In the Linux kernel, the following vulnerability has been resolved:

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

Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

Record: CVE-2026-43346
Updated: 2026-11-06

EUVDEUVD-2026-28630 No score

In the Linux kernel, the following vulnerability has been resolved:

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

Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

Record: EUVD-2026-28630
Updated: 2026-11-06

GitHub AdvisoriesGHSA-274m-pqm8-j3hc 5.5

In the Linux kernel, the following vulnerability has been resolved: ice: ptp: don't WARN when...

In the Linux kernel, the following vulnerability has been resolved:

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

Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

Record: GHSA-274m-pqm8-j3hc
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-617
Updated: 2026-11-02

OSVBELL-CVE-2026-43346 5.5

Record: BELL-CVE-2026-43346
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSVDEBIAN-CVE-2026-43346 5.5

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.

Record: DEBIAN-CVE-2026-43346
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-07

Show 11 moreShow less

OSVUBUNTU-CVE-2026-43346 5.5

Record: UBUNTU-CVE-2026-43346
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-11

OSVCLSA-2026-1786352940 No score

kernel: Fix of 148 CVEs

KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level {CVE-2026-63807}
KVM: x86: Check for invalid/obsolete root after making MMU pages available {CVE-2026-64561}
ubi: Fix use-after-free when volume resizing failed {CVE-2023-53271}
ice: Check VF VSI Pointer Value in ice_vc_add_fdir_fltr() {CVE-2025-37912}
wifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_tx_check_aggr() {CVE-2026-53318}
dpll: Prevent duplicate registrations {CVE-2026-23129}
pinmux: fix race causing mux_owner NULL with active mux_usecount {CVE-2025-38632}
HID: apple: validate feature-report field count to prevent NULL pointer dereference {CVE-2025-38557}
thunderbolt: Limit XDomain response copy to actual frame size {CVE-2026-53146}
net/mlx5e: Fix DMA FIFO desync on error CQE SQ recovery {CVE-2026-43466}
virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false {CVE-2026-31469}
scsi: target: Reset t_task_cdb pointer in error case {CVE-2025-68782}
ubi: ubi_create_volume: Fix use-after-free when volume creation failed {CVE-2022-49388}
drm/xe/reg_sr: Fix leak on xa_store failure {CVE-2026-23418}
ASoC: soc-core: flush delayed work before removing DAIs and widgets {CVE-2026-43459}
md/raid10: wait barrier before returning discard request with REQ_NOWAIT {CVE-2025-40325}
nbd: defer config put in recv_work {CVE-2025-68372}
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference {CVE-2026-23148}
net: hns3: using the num_tqps in the vf driver to apply for resources {CVE-2025-71064}
net/mlx5e: Disable MACsec offload for uplink representor profile {CVE-2025-38020}
serial: imx: fix tx statemachine deadlock {CVE-2023-52456}
dm-thin: fix metadata refcount underflow {CVE-2026-46107}
net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure {CVE-2026-53229}
drm/amdgpu: Fix use-after-free race in VM acquire {CVE-2026-43370}
usbnet:fix NPE during rx_complete {CVE-2025-22050}
platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it {CVE-2025-21645}
driver core: class: Fix wild pointer dereferences in API class_dev_iter_next() {CVE-2025-21810}
usb: atm: cxacru: fix a flaw in existing endpoint checks {CVE-2025-21916}
ALSA: seq: dummy: fix UMP event stack overread {CVE-2026-53241}
pmdomain: imx8mp-blk-ctrl: Keep the NOC_HDCP clock enabled {CVE-2026-31655}
net/mlx5: Bridge, fix the crash caused by LAG state check {CVE-2025-21970}
ALSA: timer: Don't take register_mutex with copy_from/to_user() {CVE-2025-23134}
md/raid5: validate payload size before accessing journal metadata {CVE-2026-46070}
nvmet-fc: move lsop put work to nvmet_fc_ls_req_op {CVE-2025-40171}
iommu: Fix potential memory leak in iopf_queue_remove_device() {CVE-2025-21770}
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak {CVE-2025-40035}
scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails {CVE-2026-45997}
can: dev: can_set_termination(): allow sleeping GPIOs {CVE-2024-56625}
nvme-tcp: fix the memleak while create new ctrl failed {CVE-2024-56632}
ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3() {CVE-2026-46146}
pmdomain: imx8m-blk-ctrl: fix out-of-range access of bc->domains {CVE-2026-23187}
wifi: ath12k: Clear affinity hint before calling ath12k_pci_free_irq() in error path {CVE-2025-22128}
octeon_ep: Fix memory leak in octep_device_setup() {CVE-2026-23160}
pinctrl: check the return value of pinmux_ops::get_function_name() {CVE-2025-40030}
net: tun: fix tun_napi_alloc_frags() {CVE-2024-56372}
wifi: iwlwifi: mvm: clean up ROC on failure {CVE-2025-21906}
ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd {CVE-2025-40275}
dpll: fix xa_alloc_cyclic() error handling {CVE-2025-22016}
usb: usbtmc: Flush anchored URBs in usbtmc_release {CVE-2026-31758}
RDMA/siw: Fix potential NULL pointer dereference in header processing…

Record: CLSA-2026-1786352940
Updated: 2026-11-02

OSV No score

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

In the Linux kernel, the following vulnerability has been resolved:

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

Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

Record: CVE-2026-43346
Updated: 2026-11-07

OSVopenSUSE-SU-2026:21555-1 No score