CVE-2022-41849: Race Condition
First published: Fri Sep 30 2022(Updated: )
drivers/video/fbdev/smscufx.c in the Linux kernel through 5.19.12 has a race condition and resultant use-after-free if a physically proximate attacker removes a USB device while calling open(), aka a race condition between ufx_ops_open and ufx_usb_disconnect.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=5.19.12 | |
| Debian Debian Linux | =10.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
- https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
- https://lore.kernel.org/all/20220925133243.GA383897@ubuntu/T/
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5610bcfe8693c02e2e4c8b31427f1bdbdecc839c
- https://lore.kernel.org/all/20220925133243.GA383897%40ubuntu/T/
- https://launchpad.net/bugs/cve/CVE-2022-41849
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-41849
- https://nvd.nist.gov/vuln/detail/CVE-2022-41849
- https://security-tracker.debian.org/tracker/CVE-2022-41849
- https://ubuntu.com/security/CVE-2022-41849
Frequently Asked Questions
What is the severity of CVE-2022-41849?
CVE-2022-41849 is classified as a medium severity vulnerability due to its potential for a use-after-free condition.
How do I fix CVE-2022-41849?
To fix CVE-2022-41849, upgrade to a fixed version of the Linux kernel such as 5.10.223-1 or newer.
Which versions of the Linux kernel are affected by CVE-2022-41849?
CVE-2022-41849 affects the Linux kernel versions up to and including 5.19.12.
What causes the vulnerability in CVE-2022-41849?
The vulnerability is caused by a race condition between the ufx_ops_open and ufx_usb_disconnect functions when a USB device is removed.
Is CVE-2022-41849 specific to any particular Linux distribution?
CVE-2022-41849 impacts various distributions, including Debian Linux version 10.0 and the Linux kernel.
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