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Debian LTS Advisory DLA-4642-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Andreas Henriksson
June 23, 2026 https://wiki.debian.org/LTS
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Package : u-boot
Version : 2021.01+dfsg-5+deb11u3 2023.01+dfsg-2+deb12u3
CVE ID : CVE-2024-42040 CVE-2026-46728
Debian Bug : 1081557 1136954
Multiple issues where found in u-boot, a cross-platform bootloader for
embedded systems, which could lead to information leak and signature
verification bypass.
CVE-2024-42040
buffer overread vulnerability in the DHCP implementation
CVE-2026-46728
mishandles use of unit addresses in a FIT
For Debian 11 bullseye, these problems have been fixed in version
2021.01+dfsg-5+deb11u3.
For Debian 12 bookworm, these problems have been fixed in version
2023.01+dfsg-2+deb12u3.
We recommend that you upgrade your u-boot packages.
For the detailed security status of u-boot please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/u-boot
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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