What’s Vulnerable › Vulnerabilities

CVE-2022-49739: gfs2: Always check inode size of inline inodes

• Severity: medium (CVSS 5.5 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: 2025-03-27 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: gfs2: Always check inode size of inline inodes Check if the inode size of stuffed (inline) inodes is within the allowed range when reading inodes from disk (gfs2_dinode_in()). This prevents us from on-disk corruption. The two checks in stuffed_readpage() and gfs2_unstuffer_page() that just truncate inline data to the maximum allowed size don't actually make sense, and they can be removed now as well.

Affected products

• Linux kernel: before 4.19.280; from 4.20 before 5.4.240; from 5.5 before 5.10.177; from 5.11 before 5.15.93; from 5.16 before 6.1.11 — fixed in 4.19.280, 5.10.177, 5.15.93, 5.4.240, 6.1.11

How to fix

Upgrade to a fixed version: Linux kernel 4.19.280, 5.10.177, 5.15.93, 5.4.240. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/45df749f827c286adbc951f2a4865b67f0442ba9
• https://git.kernel.org/stable/c/46c9088cabd4d0469fdb61ac2a9c5003057fe94d
• https://git.kernel.org/stable/c/4d4cb76636134bf9a0c9c3432dae936f99954586
• https://git.kernel.org/stable/c/70376c7ff31221f1d21db5611d8209e677781d3a
• https://git.kernel.org/stable/c/7c414f6f06e9a3934901b6edc3177ae5a1e07094
• https://git.kernel.org/stable/c/d458a0984429c2d47e60254f5bc4119cbafe83a2

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