CVE-2026-98965 Linux Kernel ice - Race Condition

Linux kernel ice driver contains a race condition caused by use of writel_relaxed() instead of writel() for Tx doorbell updates on arm64, letting NIC transmit before queue accounting is visible, causing kernel BUG, exploit requires sustained network load on affected hardware.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Race Condition
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
23 October 2026
Updated
25 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix restoring writel() for Tx doorbell updates.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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