CVE-2022-49934
Last modified
CVE-2022-49934 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix UAF in ieee80211_scan_rx() ieee80211_scan_rx() tries to access scan_req->flags after a null check, but a UAF is observed when the scan is completed and __ieee80211_scan_completed() executes, which then calls cfg80211_scan_done() leading to the freeing of scan_req. Since scan_req is rcu_dereference()'d, prevent the racing in __ieee80211_scan_completed() by ensuring that from mac80211's POV it is no longer accessed from an RCU read critical section before we call cfg80211_scan_done().. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix UAF in ieee80211_scan_rx() ieee80211_scan_rx() tries to access scan_req->flags after a null check, but a UAF is observed when the scan is completed and __ieee80211_scan_completed() executes, which then calls cfg80211_scan_done() leading to the freeing of scan_req. Since scan_req is rcu_dereference()'d, prevent the racing in __ieee80211_scan_completed() by ensuring that from mac80211's POV it is no longer accessed from an RCU read critical section before we call cfg80211_scan_done().
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 3.19, < 4.9.330 | — |
| Linux | Linux Kernel | >= 4.10, < 4.14.295 | — |
| Linux | Linux Kernel | >= 4.15, < 4.19.260 | — |
| Linux | Linux Kernel | >= 4.20, < 5.4.215 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.142 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.66 | — |
| Linux | Linux Kernel | >= 5.16, < 5.19.8 | — |
| Linux | Linux Kernel | 6.0 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-49934?
How severe is CVE-2022-49934?
How do I fix CVE-2022-49934?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2022
- CVE-2022-49928In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49929In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49930In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49931In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49932In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49933Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2022-49935In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2022-49936In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49937In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49938In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2022-49939In the Linux kernel, the following vulnerability has been re…7
- CVE-2022-4994In the Linux kernel, the following vulnerability has been re…
Are you affected by CVE-2022-49934?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST