CVE-2025-21894

Summary

In the Linux kernel, the following vulnerability has been resolved: net: enetc: VFs do not support HWTSTAMP_TX_ONESTEP_SYNC Actually ENETC VFs do not support HWTSTAMP_TX_ONESTEP_SYNC because only ENETC PF can access PMa_SINGLE_STEP registers. And there will be a crash if VFs are used to test one-step timestamp, the crash log as follows. [ 129.110909] Unable to handle kernel paging request at virtual address 00000000000080c0 [ 129.287769] Call trace: [ 129.290219] enetc_port_mac_wr+0x30/0xec (P) [ 129.294504] enetc_start_xmit+0xda4/0xe74 [ 129.298525] enetc_xmit+0x70/0xec [ 129.301848] dev_hard_start_xmit+0x98/0x118

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/1748531839298ab7be682155f6cd98ae04773e6a ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/1748531839298ab7be682155f6cd98ae04773e6aPatch
• https://git.kernel.org/stable/c/3d9634211121700568d0e3635ebdd5df06d20440Patch
• https://git.kernel.org/stable/c/8c393efd7420cc994864d059fcc6219bfd7cb840Patch
• https://git.kernel.org/stable/c/a562d0c4a893eae3ea51d512c4d90ab858a6b7ecPatch
• https://git.kernel.org/stable/c/3ad5fe77e477a8652c535b3a0343cf3d9ee10056