ethtool: eeprom: add more safeties to EEPROM Netlink fallback
In the Linux kernel, the following vulnerability has been resolved: ethtool: eeprom: add more safeties to EEPROM Netlink fallback The Netlink fallback path for reading module EEPROM (fallback_set_params()) validates that offset < eeprom_len, but does not check that offset + length stays within eeprom_len. The ioctl equivalent (ethtool_get_any_eeprom() in ioctl.c) has always enforced both bounds: if (eeprom.offset + eeprom.len > total_len) return -EINVAL; This could lead to surprises in both drivers and device FW. Add the missing offset + length validation to fallback_set_params(), mirroring the ioctl. Similarly - ethtool core in general, and ethtool_get_any_eeprom() in particular tries to zero-init all buffers passed to the drivers to avoid any extra work of zeroing things out. eeprom_fallback() uses a plain kmalloc(), change it to zalloc.
CVE-2026-63985
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-2026-63985
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": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "0e182689831277faf2ef683573a60474c208f690",
"versionType": "git"
},
{
"status": "affected",
"version": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "6ed7ebe22e9c3e3e946b6973c1ce43d3c38aeac1",
"versionType": "git"
},
{
"status": "affected",
"version": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "65674d2489a12b8efd2ca0effb3de1d12224b596",
"versionType": "git"
},
{
"status": "affected",
"version": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "d81376053a00865c70b8d8506a1cb93f2943d413",
"versionType": "git"
},
{
"status": "affected",
"version": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "fd0de51c54fa8474a0ddeedd71c65ad09fada390",
"versionType": "git"
},
{
"status": "affected",
"version": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "4fe1bc4b3603f621240d5b401742f302190db769",
"versionType": "git"
},
{
"status": "affected",
"version": "96d971e307cc0e434f96329b42bbd98cfbca07d2",
"lessThan": "67cfdd9210b99f260b3e0afeb9525e0acc7be31e",
"versionType": "git"
}
],
"programFiles": [
"net/ethtool/eeprom.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.93",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.35",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.12",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ethtool/eeprom.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-63985
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40920 · Revision 1
- Added to Heist Feed
- Publisher date