CVE-2026-23367

wifi: radiotap: reject radiotap with unknown bits

State: Published
Severity: Not scored
Published: Mar 25, 2026
Updated: Oct 15, 2026
Reserved: Jan 13, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 6f80f6a60f5d87e5de5fb2732751fce799991c24Affected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before d1d1d3c50095928624a95b67a6d7ccc3a18f2215Affected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 703fa979badbba83d31cd011606d060bfb8b0d1dAffected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 129c8bb320a7cef692c78056ef8e89a2a12ba448Affected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 2a60c588d5d39ad187628f58395c776a97fd4323Affected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 2f8ceeba670610d66f77def32011f48de951d781Affected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before e664971759a0e5570b50c6592e58a7f97d55e992Affected 33e5a2f776e331dc8a4379b6efb660d38f182d96 to before c854758abe0b8d86f9c43dc060ff56a0ee5b31e0Affected
LinuxLinux	2.6.34Affected before 2.6.34Not affected 5.10.253 through 5.10.Not affected 5.15.203 through 5.15.Not affected 6.1.167 through 6.1.Not affected 6.6.130 through 6.6.Not affected 6.12.77 through 6.12.Not affected 6.18.17 through 6.18.Not affected 6.19.7 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 6f80f6a60f5d87e5de5fb2732751fce799991c24Affected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before d1d1d3c50095928624a95b67a6d7ccc3a18f2215Affected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 703fa979badbba83d31cd011606d060bfb8b0d1dAffected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 129c8bb320a7cef692c78056ef8e89a2a12ba448Affected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 2a60c588d5d39ad187628f58395c776a97fd4323Affected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before 2f8ceeba670610d66f77def32011f48de951d781Affected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before e664971759a0e5570b50c6592e58a7f97d55e992Affected
33e5a2f776e331dc8a4379b6efb660d38f182d96 to before c854758abe0b8d86f9c43dc060ff56a0ee5b31e0Affected

LinuxLinux

2.6.34Affected
before 2.6.34Not affected
5.10.253 through 5.10.*Not affected
5.15.203 through 5.15.*Not affected
6.1.167 through 6.1.*Not affected
6.6.130 through 6.6.*Not affected
6.12.77 through 6.12.*Not affected
6.18.17 through 6.18.*Not affected
6.19.7 through 6.19.*Not affected
7.0 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.