CVE-2026-98585

Unknown

Last modified

CVE-2026-98585 is a vulnerability of currently unknown severity. 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.

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 Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 6cbf18a05c06090d867ef417a2a30b214d42d171, < 92c9f2ea634d92adff5403d231ebeda683c5685a; >= 6cbf18a05c06090d867ef417a2a30b214d42d171, < 491aa3167ae02f219cb2d2de6f4196d28dca03be; >= 6cbf18a05c06090d867ef417a2a30b214d42d171, < 0160953d8eec75c3c55562158c46442ff1fd410b
LinuxLinux6.15

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98585?
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.
How severe is CVE-2026-98585?
Severity scoring for CVE-2026-98585 is pending analysis.
How do I fix CVE-2026-98585?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST