eth: nfp: bound the ntuple rule dump by the caller's buffer size
In the Linux kernel, the following vulnerability has been resolved: eth: nfp: bound the ntuple rule dump by the caller's buffer size nfp_net_get_fs_loc() dumps every entry of nn->fs.list into rule_locs[] without consulting cmd->rule_cnt, which is how many entries the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN and the ioctl sizes the buffer from the rule_cnt userspace passes in, so once an admin has installed flow steering rules any user can ask for fewer slots than there are rules and run off the end of the allocation. A rule_cnt of 0 leaves the buffer pointer NULL and the walk dereferences it. Bail out with -EMSGSIZE when the buffer fills up, the way the other ntuple capable drivers do, and report how many locations were filled so a shrinking rule list does not leave the caller reading stale slots.
CVE-2026-98029
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-2026-98029
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": "9eb03bb1c035ff6e2c3a34046419446588253dda",
"lessThan": "82812583b9c69c241da6da4186f14e9df2516488",
"versionType": "git"
},
{
"status": "affected",
"version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
"lessThan": "a7e023c63e855761c1426cee8d17c2bca32aa339",
"versionType": "git"
},
{
"status": "affected",
"version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
"lessThan": "ecebfdaab72a504c10f4907bd00fc3b705ec3b12",
"versionType": "git"
},
{
"status": "affected",
"version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
"lessThan": "f1986bf87b0709c95126fe196cf39e5b8c8453a1",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/netronome/nfp/nfp_net_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": "6.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98029
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38154 · Revision 1
- Added to Heist Feed
- Publisher date