CVE-2022-33981: Use After Free
First published: Sat Jun 18 2022(Updated: )
drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.17.6 | |
| Debian Linux | =9.0 | |
| Debian Linux | =10.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
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Reference Links
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.6
- https://exchange.xforce.ibmcloud.com/vulnerabilities/225362
- https://github.com/torvalds/linux/commit/233087ca063686964a53c829d547c7571e3f67bf
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
- https://seclists.org/oss-sec/2022/q2/66
- https://www.debian.org/security/2022/dsa-5173
- https://launchpad.net/bugs/cve/CVE-2022-33981
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-33981
- https://nvd.nist.gov/vuln/detail/CVE-2022-33981
- https://security-tracker.debian.org/tracker/CVE-2022-33981
- https://ubuntu.com/security/CVE-2022-33981
- https://www.openwall.com/lists/oss-security/2022/04/28/1
- https://git.kernel.org/linus/233087ca063686964a53c829d547c7571e3f67bf
Frequently Asked Questions
What is the severity of CVE-2022-33981?
CVE-2022-33981 is classified as a denial of service vulnerability due to a concurrency use-after-free flaw.
How do I fix CVE-2022-33981?
To fix CVE-2022-33981, upgrade the Linux kernel to version 5.17.6 or later.
Which versions of Linux kernel are affected by CVE-2022-33981?
CVE-2022-33981 affects Linux kernel versions prior to 5.17.6.
What systems are impacted by CVE-2022-33981?
CVE-2022-33981 impacts various distributions including Debian GNU/Linux version 9.0 and 10.0.
What can happen if CVE-2022-33981 is exploited?
Exploitation of CVE-2022-33981 may lead to a denial of service, causing the system to become unresponsive.
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