CVE-2026-23445

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> igc: fix page fault in XDP TX timestamps handling<br /> <br /> If an XDP application that requested TX timestamping is shutting down<br /> while the link of the interface in use is still up the following kernel<br /> splat is reported:<br /> <br /> [ 883.803618] [ T1554] BUG: unable to handle page fault for address: ffffcfb6200fd008<br /> ...<br /> [ 883.803650] [ T1554] Call Trace:<br /> [ 883.803652] [ T1554] <br /> [ 883.803654] [ T1554] igc_ptp_tx_tstamp_event+0xdf/0x160 [igc]<br /> [ 883.803660] [ T1554] igc_tsync_interrupt+0x2d5/0x300 [igc]<br /> ...<br /> <br /> During shutdown of the TX ring the xsk_meta pointers are left behind, so<br /> that the IRQ handler is trying to touch them.<br /> <br /> This issue is now being fixed by cleaning up the stale xsk meta data on<br /> TX shutdown. TX timestamps on other queues remain unaffected.