CVE-2022-30767

Name: CVE-2022-30767
Creator: NVD / NIST
Published: 2022-05-16T03:15:07.563+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.45%

Last modified Jun 17, 2026

CVE-2022-30767 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, leading to a buffer overflow. NOTE: this issue exists because of an incorrect fix for CVE-2019-14196.. EPSS estimates a 2.45% chance of exploitation in the next 30 days.

Description

nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, leading to a buffer overflow. NOTE: this issue exists because of an incorrect fix for CVE-2019-14196.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.45%

82.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions	Update
Denx	U-Boot	<= 2022.04	—
Denx	U-Boot	2022.07	Rc1
Fedoraproject	Fedora	36	—

References

https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96Patch, Third Party Advisory
https://lists.denx.de/pipermail/u-boot/2022-May/483952.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ERQ6EBHTADB/
https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/Exploit, Third Party Advisory
https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80Patch, Vendor Advisory
https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
https://lists.denx.de/pipermail/u-boot/2022-May/483952.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ERQ6EBHTADB/
https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/Exploit, Third Party Advisory
https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80Patch, Vendor Advisory

Timeline

Published: May 16, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-30767?

How severe is CVE-2022-30767?

CVE-2022-30767 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.45% probability of exploitation in the next 30 days.

How do I fix CVE-2022-30767?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-30767?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST