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Vulnerability record · CVE-2022-30767 · published 16 May 2022

CVE-2022-30767: Denx u-boot classic buffer overflow vulnerability

Denx · U Boot

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.

9.8 CVSS 3.1 Critical EPSS 2.7% · top 14.7% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
11References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96 PatchThird Party Advisory
https://lists.denx.de/pipermail/u-boot/2022-May/483952.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ER
https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/ ExploitThird Party Advisory
https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80 PatchVendor Advisory
https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
https://lists.denx.de/pipermail/u-boot/2022-May/483952.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ER
https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/ ExploitThird Party Advisory
https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80 PatchVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-30767), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.