Use After Free in Linux Kernel
CVE-2022-2978
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (14.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 10.0
- Kernel — versions Linux kernel 6.0-rc3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lore.kernel.org/linux-fsdevel/20220816040859.659129-1-dzm91@hust.edu.cn/T/
- lists.debian.org/debian-lts-announce/2022/12/msg00034.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-2978?
- CVE-2022-2978 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2022-08-24.
- How severe is CVE-2022-2978?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-2978 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.