In the Linux kernel, the following vulnerability has been resolved:
sfc: fix crash when reading stats while NIC is resetting
efx_net_stats() (.ndo_get_stats64) can be called during an ethtool selftest, during which time nic_data->mc_stats is NULL as the NIC has been fini'd. In this case do not attempt to fetch the latest stats from the hardware, else we will crash on a NULL dereference: BUG: kernel NULL pointer dereference, address: 0000000000000038 RIP efx_nic_update_stats abridged calltrace: efx_ef10_update_stats_pf efx_net_stats dev_get_stats dev_seq_printf_stats Skipping the read is safe, we will simply give out stale stats. To ensure that the free in efx_ef10_fini_nic() does not race against efx_ef10_update_stats_pf(), which could cause a TOCTTOU bug, take the efx->stats_lock in fini_nic (it is already held across update_stats).
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade python3-perf | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.15Upgrade linux-realtimeUpgrade linux-lowlatencyUpgrade linux-gcpUpgrade linux-xilinx-zynqmpUpgrade linux-intel-iotg-5.15Upgrade linux-gkeopUpgrade linux-oracleUpgrade linux-hwe-5.15Upgrade linux-intel-iotgUpgrade linux-oracle-5.15Upgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-riscv-5.15Upgrade linux-azureUpgrade linux-ibmUpgrade linux-nvidia-tegra-igxUpgrade linux-kvmUpgrade linux-nvidia-tegraUpgrade linux-bluefieldUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gkeUpgrade linuxUpgrade linux-intel-iot-realtimeUpgrade linux-raspiUpgrade linux-ibm-5.15Upgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-nvidia-tegra-5.15 | Jan 6, 2026 | Dec 24, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 24, 2025 |
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