CVE-2026-98585

eth: fbnic: Avoid rounding zero ring sizes

CVE-2026-98585 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98585 (version 7.2.9-1), released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0017
5th percentile

In the Linux kernel, the following vulnerability has been resolved: eth: fbnic: Avoid rounding zero ring sizes roundup_pow_of_two() is undefined for zero. ethtool permits a zero ring size to reach the driver, where the minimum-size check should reject it. Leave zero unchanged while rounding nonzero ring sizes. The minimum-size check then rejects zero deterministically without changing the established behavior for other values.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 14 7.2.9-1 DEBIAN-CVE-2026-98585 Oct 19, 2026

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