CVE-2022-2978: Use After Free
First published: Wed Aug 24 2022(Updated: )
A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.12<4.9.331 | |
| Linux Kernel | >=4.10<4.14.296 | |
| Linux Kernel | >=4.15<4.19.262 | |
| Linux Kernel | >=4.20<5.4.218 | |
| Linux Kernel | >=5.5<5.10.148 | |
| Linux Kernel | >=5.11<5.15.73 | |
| Linux Kernel | >=5.16<5.19.15 | |
| Linux Kernel | >=6.0<6.0.1 | |
| Debian Linux | =10.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
- https://lore.kernel.org/linux-fsdevel/20220816040859.659129-1-dzm91@hust.edu.cn/T/#u
- https://launchpad.net/bugs/cve/CVE-2022-2978
- https://lore.kernel.org/linux-fsdevel/20220816040859.659129-1-dzm91%40hust.edu.cn/T/#u
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2978
- https://nvd.nist.gov/vuln/detail/CVE-2022-2978
- https://security-tracker.debian.org/tracker/CVE-2022-2978
- https://ubuntu.com/security/CVE-2022-2978
Frequently Asked Questions
What is the severity of CVE-2022-2978?
CVE-2022-2978 is considered a high-severity vulnerability that could allow local users to crash the system or escalate privileges.
How do I fix CVE-2022-2978?
To fix CVE-2022-2978, upgrade to the patched versions of the Linux kernel, including 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.11-1, or 6.12.12-1.
Who is affected by CVE-2022-2978?
CVE-2022-2978 affects local users of Linux systems running vulnerable versions of the kernel, particularly those exploiting the NILFS file system.
What type of vulnerability is CVE-2022-2978?
CVE-2022-2978 is a use-after-free vulnerability in the Linux kernel that can be exploited to potentially escalate privileges.
When was CVE-2022-2978 disclosed?
CVE-2022-2978 was disclosed in August 2022.
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