Barebox buffer error vulnerability

Barebox is a versatile and flexible bootloader developed by Barebox Open Source. Versions of Barebox prior to 2026.04.0 contained a buffer error vulnerability. This vulnerability stemmed from the dhcpmessagetype function in DHCP option parsing, which did not verify whether the option pointers wer...

Barebox buffer error vulnerability

Barebox is a versatile and flexible bootloader developed by Barebox Open Source. Versions of Barebox prior to 2026.04.0 contained a buffer error vulnerability. This vulnerability stemmed from the lack of verification of the ehentry fields and buffer capacity during ext4 extent parsing. It could...

PT-2026-39850

Name of the Vulnerable Software and Affected Versions barebox versions prior to 2026.04.0 Description An out-of-bounds read exists in the ext4 extent parsing process due to missing validation of the eh entries field against buffer capacity within the fs/ext4/ext4 common.c file. An attacker can...

CVE-2026-34962: Loop with Unreachable Exit Condition

barebox version prior to 2026.04.0 contains a denial-of-service vulnerability in ext4 directory parsing in fs/ext4/ext4common.c where the ext4fsiteratedir function fails to validate that directory entry length values are non-zero. Attackers can supply a malicious ext4 filesystem image with a...

CVE-2026-34963: Integer Overflow or Wraparound

barebox version prior to 2026.04.0 contains multiple memory-safety vulnerabilities in the EFI PE loader in efi/loader/pe.c where integer overflow in virtual image size computation using 32-bit arithmetic on section VirtualAddress and size values allows undersized heap allocation, and PE section...

CVE-2026-34961: Out-of-bounds Read

barebox prior to version 2026.04.0 contains out-of-bounds read vulnerabilities in ext4 extent parsing due to missing validation of the ehentries field against buffer capacity in fs/ext4/ext4common.c. Attackers can supply a malicious ext4 filesystem image via USB, SD card, or network boot to trigg...

CVE-2026-34960: Out-of-bounds Read

barebox prior to version 2026.04.0 contains an out-of-bounds read vulnerability in DHCP option parsing within the dhcpmessagetype function that fails to verify the options pointer remains within received packet bounds. An attacker on the same broadcast domain can send a crafted DHCP Offer or ACK...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: uboot-tools (UTSA-2026-007172)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007172 advisory. barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT...

OESA-2026-1834 uboot-tools security update

This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fwprintenv and fwsetenv programs to read and modify U-Boot's environment. Security Fixes: barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the...

CVE-2026-33243

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

CVE-2026-33243

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

DEBIAN-CVE-2026-33243

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

CVE-2026-33243

Removed by vendor...

CVE-2026-33243

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

CVE-2026-33243 barebox: FIT Signature Verification Bypass Vulnerability

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

CVE-2026-33243

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

EUVD-2026-13893

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2025.09.3 and from version 2025.10.0 to before version 2026.03.1, when creating a FIT, mkimage1 sets the hashed-nodes property of the FIT signature node to list which nodes of the FIT were hashed as part of the signing...

CVE-2026-33243

Barebox contains a vulnerability in the FIT signing flow: during mkimage, the hashed-nodes property of the FIT signature node is computed, but the hashed-nodes value is not itself protected by the hash. An attacker can modify hashed-nodes to influence which nodes were reported as hashed, potentia...

CVE-2026-33243 barebox: FIT Signature Verification Bypass Vulnerability

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...

CVE-2026-33243 barebox: FIT Signature Verification Bypass Vulnerability

barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 and the corresponding backport to 2025.09.3, an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a...