What’s Vulnerable › Vulnerabilities

CVE-2022-2978

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-08-24 · updated 2026-10-14
• Weakness: CWE-416

Description

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.

Affected products

• Debian Linux: 10.0
• Linux kernel: from 2.6.12 before 4.9.331; from 4.10 before 4.14.296; from 4.15 before 4.19.262; from 4.20 before 5.4.218; from 5.5 before 5.10.148; from 5.11 before 5.15.73 — fixed in 4.14.296, 4.19.262, 4.9.331, 5.10.148, 5.15.73, 5.19.15

How to fix

Upgrade to a fixed version: Linux kernel 4.14.296, 4.19.262, 4.9.331, 5.10.148. Check the vendor advisory for mitigations.

References

• https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
• https://lore.kernel.org/linux-fsdevel/20220816040859.659129-1-dzm91%40hust.edu.cn/T/#u
• https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html
• https://lore.kernel.org/linux-fsdevel/20220816040859.659129-1-dzm91%40hust.edu.cn/T/#u
• https://cert-portal.siemens.com/productcert/html/ssa-794697.html

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