CVE-2026-98275

What the bug is

The RX overrun interrupt is reported in interrupt status register 4, but gmac_irq() acknowledges it using the RX descriptor error bit from status register 0. For GMAC0 this writes the GMAC1 overrun bit, while for GMAC1 the shift leaves no bit in the 32-bit register. Acknowledge the same per-port RX overrun bit that was detected.

Where it lives

The fix touches these files. If the subsystem is one you do not use, the practical exposure is lower, though the package is still the vulnerable one.

drivers/net/ethernet/cortina/gemini.c

What this is

ARM/CORTINA SYSTEMS GEMINI ARM ARCHITECTUREMAINTAINERS section matched on drivers/net/ethernet/cortina/ · linux-arm-kernel@lists.infradead.org · Maintained

Kernel module

none to look for. The file would have gone into gemini, and Debian does not compile it into that module, so finding gemini in lsmod would say nothing about this CVE.

Check it on the machine

grep -wE 'CONFIG_ETHERNET|CONFIG_GEMINI_ETHERNET|CONFIG_NET_VENDOR_CORTINA' /boot/config-$(uname -r)

Reads the booted kernel's own configuration, on the machine and nowhere else. =y is built in, =m is a module, and an is not set line means the code is not there.

Show whether Debian builds this, per release

Debian does not build this code. In 4 releases below, every kernel flavour Debian publishes has the switch off, so the vulnerable file is compiled into no kernel binary Debian ships.

• bookworm, trixie, forky, sidn

n

not enabled on any flavour - this release does not build the code

Build switches

CONFIG_ETHERNET, CONFIG_GEMINI_ETHERNET, CONFIG_NET_VENDOR_CORTINA

Reads as

all on means the file is compiled; any one off means it is not.

From the configuration Debian publishes for every kernel flavour it builds. It covers only the architectures Debian ships a linux-config package for, and nothing about a kernel you built yourself. Debian's own status above stays authoritative about the source package.MAINTAINERS kbuild Makefiles Debian linux-config packages

Signals

Published

2026-10-06 (13 days ago)source

CVSS

no vector published, unrated

Attack vector

not published

EPSS

0.18%, higher than 6.7% of all CVEssource

CISA KEV

not listedthe KEV catalogue

Debian urgency

not yet assignedsource

Subsystem

drivers/net

Upstream fixes

The versions the CNA records as introducing and fixing this, and the commit for each. source

Introduced	Fixed in	Commit
4.16	5.10.271	1163cc82dcbc
4.16	5.15.222	12a0c7bb448c
4.16	6.1.189	d72d87926ca3
4.16	6.6.158	472493d1d333
4.16	6.12.112	2f23fa11fef9
4.16	6.18.54	4f33e036e827
4.16	7.2.8	d4bd67045439
4.16	7.3	1dd85662fee6

Debian advisories