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CVE-2026-98585

eth: fbnic: Avoid rounding zero ring sizes

N/A
Published: October 18, 2026 at 03:18 PM UTC
Updated: October 19, 2026 at 10:19 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.156cbf18a05c06090d867ef417a2a30b214d42d171
Vendor states this is fixed in 6.18.55 (unaffected)
Vendor states this is fixed in 7.2.9 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: cverecord
https://git.kernel.org/stable/c/92c9f2ea634d92adff5403d231ebeda683c5685a
Source: cverecord
https://git.kernel.org/stable/c/491aa3167ae02f219cb2d2de6f4196d28dca03be
Source: cverecord
https://git.kernel.org/stable/c/0160953d8eec75c3c55562158c46442ff1fd410b

Quick Info

StatusRECEIVED

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