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CVE-2022-50864

11
FAUCET Score

CVE-2022-50864 is a vulnerability in the Linux kernel's nilfs2 filesystem module. It arises from insufficient validation of the s_log_block_size field in superblock data, which, if corrupted and excessively large, can lead to a shift-out-of-bounds error and a kernel panic. The vulnerability is addressed by implementing a new helper function for block size retrieval that includes sanity checks. While no CVSS score is provided, its FAUCET Risk Score is 7/100, and its EPSS score is very low, indicating a minimal likelihood of exploitation. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
LinuxLinux
2.6.30CNA affecteddefault affected
LinuxLinux
>= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f, < 8b6ef451b5701b37d9a5905534595776a662edfc, >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f, < a16731fa1b96226c75bbf18e73513b14fc318360, >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f, < ddb6615a168f97b91175e00eda4c644741cf531c, >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f, < ebeccaaef67a4895d2496ab8d9c2fb8d89201211, >= 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f, < ec93b5430ec0f60877a5388bb023d60624f9ab9fCNA affecteddefault unaffected

CVSS Data

CVSS data has not been published for this CVE.

Exploit Intelligence

EPSS Score
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
6.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15

Social Chatter

Media Mentions

No media coverage found for this CVE.

Remediation

Vendor Advisories (1)

redhatCVE-2022-50864

kernel: nilfs2: fix shift-out-of-bounds due to too large exponent of block size

Dec 30, 2025

References

git.kernel.org / stable/c/8b6ef451b5701b37d9a5905534595776a662edfc
git.kernel.org / stable/c/a16731fa1b96226c75bbf18e73513b14fc318360
git.kernel.org / stable/c/ddb6615a168f97b91175e00eda4c644741cf531c
git.kernel.org / stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211
git.kernel.org / stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f