CVE-2022-30767

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-05-16 · updated 2026-06-17
Weakness: CWE-120

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.

Affected products

u-boot: through 2022.04; 2022.07-rc1, 2022.07-rc2
Fedoraproject Fedora: 36

References

https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96
https://lists.denx.de/pipermail/u-boot/2022-May/483952.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ERQ6EBHTADB/
https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/
https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80
https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
https://lists.denx.de/pipermail/u-boot/2022-May/483952.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ERQ6EBHTADB/
https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/
https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80

Get alerted when CVE-2022-30767 or the next vulnerability affects your stack