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CVE-2022-48829

9.1 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes iattr::ia_size is a loff_t, so these NFSv3 procedures must be car…

Published Jul 16, 2024EPSS 0.65%

Overview

CVE-2022-48829 is a critical-severity vulnerability. It was published on July 16, 2024 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes

iattr::ia_size is a loff_t, so these NFSv3 procedures must be

careful to deal with incoming client size values that are larger

than s64_max without corrupting the value.

Silently capping the value results in storing a different value

than the client passed in which is unexpected behavior, so remove

the min_t() check in decode_sattr3().

Note that RFC 1813 permits only the WRITE procedure to return

NFS3ERR_FBIG. We believe that NFSv3 reference implementations

also return NFS3ERR_FBIG when ia_size is too large.

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/37f2d2cd8eadddbbd9c7bda327a9393399b2f89bRefgit.kernel.org/stable/c/72c14aed6838b5d90b4dd926b6a339b34bb02e08Refgit.kernel.org/stable/c/a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3Refgit.kernel.org/stable/c/a648fdeb7c0e17177a2280344d015dba3fbe3314Refgit.kernel.org/stable/c/aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0Refgit.kernel.org/stable/c/37f2d2cd8eadddbbd9c7bda327a9393399b2f89bRefgit.kernel.org/stable/c/a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3Refgit.kernel.org/stable/c/a648fdeb7c0e17177a2280344d015dba3fbe3314Refgit.kernel.org/stable/c/aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0Refcert-portal.siemens.com/productcert/html/ssa-265688.html

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48829?

CVE-2022-48829 is a critical-severity vulnerability. It was published on July 16, 2024 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2022-48829?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-48829?

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-2022-48829?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48829 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.

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