wifi: radiotap: reject radiotap with unknown bits
In the Linux kernel, the following vulnerability has been resolved: wifi: radiotap: reject radiotap with unknown bits The radiotap parser is currently only used with the radiotap namespace (not with vendor namespaces), but if the undefined field 18 is used, the alignment/size is unknown as well. In this case, iterator->_next_ns_data isn't initialized (it's only set for skipping vendor namespaces), and syzbot points out that we later compare against this uninitialized value. Fix this by moving the rejection of unknown radiotap fields down to after the in-namespace lookup, so it will really use iterator->_next_ns_data only for vendor namespaces, even in case undefined fields are present.
CVE-2026-23367
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-2026-23367
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": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "6f80f6a60f5d87e5de5fb2732751fce799991c24",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "d1d1d3c50095928624a95b67a6d7ccc3a18f2215",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "703fa979badbba83d31cd011606d060bfb8b0d1d",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "129c8bb320a7cef692c78056ef8e89a2a12ba448",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "2a60c588d5d39ad187628f58395c776a97fd4323",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "2f8ceeba670610d66f77def32011f48de951d781",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "e664971759a0e5570b50c6592e58a7f97d55e992",
"versionType": "git"
},
{
"status": "affected",
"version": "33e5a2f776e331dc8a4379b6efb660d38f182d96",
"lessThan": "c854758abe0b8d86f9c43dc060ff56a0ee5b31e0",
"versionType": "git"
}
],
"programFiles": [
"net/wireless/radiotap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.34"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.34",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/wireless/radiotap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23367
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27237 · Revision 1
- Added to Heist Feed
- Publisher date