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

Affected Software

VendorProductVersion RangeStatus
LinuxLinux41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 1748531839298ab7be682155f6cd98ae04773e6aaffected
LinuxLinux41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 3d9634211121700568d0e3635ebdd5df06d20440affected
LinuxLinux41514737ecaa603a5127cdccdc5f17ef11b9b3dc < 8c393efd7420cc994864d059fcc6219bfd7cb840affected
LinuxLinux41514737ecaa603a5127cdccdc5f17ef11b9b3dc < a562d0c4a893eae3ea51d512c4d90ab858a6b7ecaffected
LinuxLinux5.3affected
LinuxLinux0 < 5.3unaffected
LinuxLinux6.6.83 <= 6.6.*unaffected
LinuxLinux6.12.18 <= 6.12.*unaffected
LinuxLinux6.13.6 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

References