CVE-2026-23367
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel < 5.10.253
- Linux Kernel < 5.15.203
- Linux Kernel < 6.1.167
- Linux Kernel < 6.6.130
- Linux Kernel < 6.12.77
- Linux Kernel < 6.18.17
- Linux Kernel < 6.19.7
- Linux Kernel 2.6.34
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-23367.md and follow it. Check whether this project is affected by CVE-2026-23367. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/129c8bb320a7cef692c78056ef8e89a2a12ba448
- https://git.kernel.org/stable/c/2a60c588d5d39ad187628f58395c776a97fd4323
- https://git.kernel.org/stable/c/2f8ceeba670610d66f77def32011f48de951d781
- https://git.kernel.org/stable/c/6f80f6a60f5d87e5de5fb2732751fce799991c24
- https://git.kernel.org/stable/c/703fa979badbba83d31cd011606d060bfb8b0d1d
- https://git.kernel.org/stable/c/c854758abe0b8d86f9c43dc060ff56a0ee5b31e0
- https://git.kernel.org/stable/c/d1d1d3c50095928624a95b67a6d7ccc3a18f2215
- https://git.kernel.org/stable/c/e664971759a0e5570b50c6592e58a7f97d55e992
References
- https://git.kernel.org/stable/c/129c8bb320a7cef692c78056ef8e89a2a12ba448
- https://git.kernel.org/stable/c/2a60c588d5d39ad187628f58395c776a97fd4323
- https://git.kernel.org/stable/c/2f8ceeba670610d66f77def32011f48de951d781
- https://git.kernel.org/stable/c/6f80f6a60f5d87e5de5fb2732751fce799991c24
- https://git.kernel.org/stable/c/703fa979badbba83d31cd011606d060bfb8b0d1d
- https://git.kernel.org/stable/c/c854758abe0b8d86f9c43dc060ff56a0ee5b31e0
- https://git.kernel.org/stable/c/d1d1d3c50095928624a95b67a6d7ccc3a18f2215
- https://git.kernel.org/stable/c/e664971759a0e5570b50c6592e58a7f97d55e992
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html