netfilter: nf_tables: reject mismatching sum of field_len with set key length
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject mismatching sum of field_len with set key length The field length description provides the length of each separated key field in the concatenation, each field gets rounded up to 32-bits to calculate the pipapo rule width from pipapo_init(). The set key length provides the total size of the key aligned to 32-bits. Register-based arithmetics still allows for combining mismatching set key length and field length description, eg. set key length 10 and field description [ 5, 4 ] leading to pipapo width of 12.
CVE-2025-21826
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-2025-21826
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": "2d4c0798a1ef8db15b3277697ac2def4eda42312",
"lessThan": "6b467c8feac759f4c5c86d708beca2aa2b29584f",
"versionType": "git"
},
{
"status": "affected",
"version": "77be8c495a3f841e88b46508cc20d3d7d3289da3",
"lessThan": "5083a7ae45003456c253e981b30a43f71230b4a3",
"versionType": "git"
},
{
"status": "affected",
"version": "9cb084df01e198119de477ac691d682fb01e80f3",
"lessThan": "2ac254343d3cf228ae0738b2615fedf85d000752",
"versionType": "git"
},
{
"status": "affected",
"version": "dc45bb00e66a33de1abb29e3d587880e1d4d9a7e",
"lessThan": "82e491e085719068179ff6a5466b7387cc4bbf32",
"versionType": "git"
},
{
"status": "affected",
"version": "3ce67e3793f48c1b9635beb9bb71116ca1e51b58",
"lessThan": "49b7182b97bafbd5645414aff054b4a65d05823d",
"versionType": "git"
},
{
"status": "affected",
"version": "3ce67e3793f48c1b9635beb9bb71116ca1e51b58",
"lessThan": "ab50d0eff4a939d20c37721fd9766347efcdb6f6",
"versionType": "git"
},
{
"status": "affected",
"version": "3ce67e3793f48c1b9635beb9bb71116ca1e51b58",
"lessThan": "1b9335a8000fb70742f7db10af314104b6ace220",
"versionType": "git"
},
{
"status": "affected",
"version": "ff67e3e488090908dc015ba04d7407d8bd467f7e",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.209",
"lessThan": "5.10.235",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.148",
"lessThan": "5.15.179",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.75",
"lessThan": "6.1.129",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.14",
"lessThan": "6.6.76",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.7.2",
"lessThan": "6.8",
"versionType": "semver"
}
],
"programFiles": [
"net/netfilter/nf_tables_api.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": "5.10.235",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.179",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.129",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.76",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.13",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.2",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21826
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26952 · Revision 1
- Added to Heist Feed
- Publisher date