Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2022-49688

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: afs: Fix dynamic root getattr The recent patch to make afs_getattr consult the server didn't account for the pseudo-inodes empl…

Published Feb 26, 2025CWE-476EPSS 0.30%

Overview

CVE-2022-49688 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

afs: Fix dynamic root getattr

The recent patch to make afs_getattr consult the server didn't account

for the pseudo-inodes employed by the dynamic root-type afs superblock

not having a volume or a server to access, and thus an oops occurs if

such a directory is stat'd.

Fix this by checking to see if the vnode->volume pointer actually points

anywhere before following it in afs_getattr().

This can be tested by stat'ing a directory in /afs. It may be

sufficient just to do "ls /afs" and the oops looks something like:

BUG: kernel NULL pointer dereference, address: 0000000000000020

...

RIP: 0010:afs_getattr+0x8b/0x14b

...

Call Trace:

<TASK>

vfs_statx+0x79/0xf5

vfs_fstatat+0x49/0x62

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ceRefgit.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4dRefgit.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9bRefgit.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4Refgit.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3debRefgit.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49688?

CVE-2022-49688 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49688?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49688?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49688?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49688 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2022

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999