CVE-2026-23367
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.
How to fix
- linux linux_kernel5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7 or later
- git.kernel.org/stable/c/129c8bb320a7cef692c78056ef8e89a2a12ba448
- git.kernel.org/stable/c/2a60c588d5d39ad187628f58395c776a97fd4323
- git.kernel.org/stable/c/2f8ceeba670610d66f77def32011f48de951d781
- git.kernel.org/stable/c/6f80f6a60f5d87e5de5fb2732751fce799991c24
- git.kernel.org/stable/c/703fa979badbba83d31cd011606d060bfb8b0d1d
- git.kernel.org/stable/c/c854758abe0b8d86f9c43dc060ff56a0ee5b31e0
- git.kernel.org/stable/c/d1d1d3c50095928624a95b67a6d7ccc3a18f2215
- git.kernel.org/stable/c/e664971759a0e5570b50c6592e58a7f97d55e992
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.34.1 ≤ v < 5.10.253, 5.11 ≤ v < 5.15.203, 5.16 ≤ v < 6.1.167, 6.2 ≤ v < 6.6.130, 6.7 ≤ v < 6.12.77, 6.13 ≤ v < 6.18.17, 6.19 ≤ v < 6.19.7, 2.6.34, 7.0 | 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.