CVE-2022-30767

moderate-risk
Published 2022-05-16

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.

Do I need to act?

-
0.15% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 5d14ee4e53a81055d34ba280cb8fd90330f22a96
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Fedoraproject Denx

References (11)

Patch https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96
Mailing List https://lists.denx.de/pipermail/u-boot/2022-May/483952.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Exploit https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/
Patch https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde18...
Patch https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
Mailing List https://lists.denx.de/pipermail/u-boot/2022-May/483952.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Exploit https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/
Patch https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde18...
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 1/34 · Minimal
Exposure 10/34 · Low