eth: fbnic: Avoid rounding zero ring sizes
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.
CVE-2026-98585
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98585
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6cbf18a05c06090d867ef417a2a30b214d42d171",
"lessThan": "92c9f2ea634d92adff5403d231ebeda683c5685a",
"versionType": "git"
},
{
"status": "affected",
"version": "6cbf18a05c06090d867ef417a2a30b214d42d171",
"lessThan": "491aa3167ae02f219cb2d2de6f4196d28dca03be",
"versionType": "git"
},
{
"status": "affected",
"version": "6cbf18a05c06090d867ef417a2a30b214d42d171",
"lessThan": "0160953d8eec75c3c55562158c46442ff1fd410b",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98585
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38605 · Revision 1
- Added to Heist Feed
- Publisher date