CVE-2022-49968
What it is
In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroy_workqueue call There is a possible race condition (use-after-free) like below (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | The root cause for this race is that the upper layer (ieee802154) is unaware of this detaching event and the function adf7242_channel can be called without any checks. To fix this, we can add a flag write at the beginning of adf7242_remove and add flag check in adf7242_channel. Or we can just defer the destructive operation like other commit 3e0588c291d6 ("hamradio: defer ax25 kfree after unregister_netdev") which let the ieee802154_unregister_hw() to handle the synchronization. This patch takes the second option. runs")
At a glance
- Exploitability
- Can be exploited from the same network segment without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% 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: 0.2% in the next 30 days (EPSS).
- Severity: 8.0 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-362 · Race condition
- Record status
- Modified
Affected
- Linux Kernel < 4.18
- Linux Kernel < 4.19.258
- Linux Kernel < 5.4.213
- Linux Kernel < 5.10.142
- Linux Kernel < 5.15.66
- Linux Kernel < 5.19.8
- Linux Kernel 4.18
- Linux Kernel 6.0
Attack profile CVSS 3.1 · 8.0
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-2022-49968.md and follow it. Check whether this project is affected by CVE-2022-49968. 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/15f3b89bd521d5770d36a61fc04a77c293138ba6
- https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271
- https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485
- https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf
- https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008
- https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c
References
- https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6
- https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271
- https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485
- https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf
- https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008
- https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c