CVE-2025-71095

/// Technical description

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

net: stmmac: fix the crash issue for zero copy XDP_TX action

There is a crash issue when running zero copy XDP_TX action, the crash

log is shown below.

[ 216.122464] Unable to handle kernel paging request at virtual address fffeffff80000000

[ 216.187524] Internal error: Oops: 0000000096000144 [#1] SMP

[ 216.301694] Call trace:

[ 216.304130] dcache_clean_poc+0x20/0x38 (P)

[ 216.308308] __dma_sync_single_for_device+0x1bc/0x1e0

[ 216.313351] stmmac_xdp_xmit_xdpf+0x354/0x400

[ 216.317701] __stmmac_xdp_run_prog+0x164/0x368

[ 216.322139] stmmac_napi_poll_rxtx+0xba8/0xf00

[ 216.326576] __napi_poll+0x40/0x218

[ 216.408054] Kernel panic - not syncing: Oops: Fatal exception in interrupt

For XDP_TX action, the xdp_buff is converted to xdp_frame by

xdp_convert_buff_to_frame(). The memory type of the resulting xdp_frame

depends on the memory type of the xdp_buff. For page pool based xdp_buff

it produces xdp_fra

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References