CVE-2026-23445 in Kernel

Resumen (Inglés)

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

igc: fix page fault in XDP TX timestamps handling

If an XDP application that requested TX timestamping is shutting down
while the link of the interface in use is still up the following kernel
splat is reported:

[ 883.803618] [ T1554] BUG: unable to handle page fault for address: ffffcfb6200fd008
...
[ 883.803650] [ T1554] Call Trace:
[ 883.803652] [ T1554]
[ 883.803654] [ T1554] igc_ptp_tx_tstamp_event+0xdf/0x160 [igc]
[ 883.803660] [ T1554] igc_tsync_interrupt+0x2d5/0x300 [igc]
...

During shutdown of the TX ring the xsk_meta pointers are left behind, so
that the IRQ handler is trying to touch them.

This issue is now being fixed by cleaning up the stale xsk meta data on
TX shutdown. TX timestamps on other queues remain unaffected.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Responsable

Linux

Reservar

2026-01-13

Divulgación

2026-04-03

Estado

Confirmado

Voces

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerabilidad	CWE	Exp	Con	CVE
355153	Linux Kernel IRQ igc_ptp_tx_tstamp_event desbordamiento de búfer	119	No está definido	Arreglo oficial	CVE-2026-23445

Fuentes

• MITRE
• NVD
• CVE Details