CVE-2022-49739: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 4.19.280
linux	linux_kernel	4.20 — 5.4.240
linux	linux_kernel	5.5 — 5.10.177
linux	linux_kernel	5.11 — 5.15.93
linux	linux_kernel	5.16 — 6.1.11

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2022-49739? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49739? +

CVE-2022-49739 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49739? +

CVE-2022-49739 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-49739? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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