Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 845039 (CVE-2022-30767) - dev-embedded/u-boot-tools: unbounded memcpy in nfs
Summary: dev-embedded/u-boot-tools: unbounded memcpy in nfs
Alias: CVE-2022-30767
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
Whiteboard: B2 [upstream]
Depends on:
Reported: 2022-05-16 16:57 UTC by John Helmert III
Modified: 2022-05-16 16:57 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


Note You need to log in before you can comment on or make changes to this bug.
Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-05-16 16:57:14 UTC
CVE-2022-30767 (

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.

It seems these references are duplicated from CVE-2019-14192 but with
the new email and a new comment on the commit. From that comment:

"Xeno Kovah (@XenoKovah) found this bypass and is presented as a case
study in the course "Vulnerabilities 1001 - OST2". After dynamically
verifying the bypass, I am merely reporting the discovery (tested with
some dirty code that I hope would never see the sun's light)."

Somewhat troubling that this kind of thing would be exploited in the
wild in public and not be reported upstream properly.