Denx U-Boot vulnerabilities

CVE-2026-33243 [HIGH] CWE-345 CVE-2026-33243: barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corr 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 signed configuration. mkimage(1) sets the hashed-node

CVE-2025-24857 [HIGH] CWE-284 CVE-2025-24857: Improper access control for volatile memory containing boot code in Universal Boot Loader (U-Boot) b Improper access control for volatile memory containing boot code in Universal Boot Loader (U-Boot) before 2017.11 and Qualcomm chips IPQ4019, IPQ5018, IPQ5322, IPQ6018, IPQ8064, IPQ8074, and IPQ9574 could allow an attacker to execute arbitrary code.

CVE-2025-45512 [MEDIUM] CWE-77 CVE-2025-45512: A lack of signature verification in the bootloader of DENX Software Engineering Das U-Boot (U-Boot) A lack of signature verification in the bootloader of DENX Software Engineering Das U-Boot (U-Boot) v1.1.3 allows attackers to install crafted firmware files, leading to arbitrary code execution.

CVE-2024-57258 [HIGH] CWE-190 CVE-2024-57258: Integer overflows in memory allocation in Das U-Boot before 2025.01-rc1 occur for a crafted squashfs Integer overflows in memory allocation in Das U-Boot before 2025.01-rc1 occur for a crafted squashfs filesystem via sbrk, via request2size, or because ptrdiff_t is mishandled on x86_64.

CVE-2024-57254 [MEDIUM] CWE-190 CVE-2024-57254: An integer overflow in sqfs_inode_size in Das U-Boot before 2025.01-rc1 occurs in the symlink size c An integer overflow in sqfs_inode_size in Das U-Boot before 2025.01-rc1 occurs in the symlink size calculation via a crafted squashfs filesystem.

CVE-2024-57259 [MEDIUM] CWE-193 CVE-2024-57259: sqfs_search_dir in Das U-Boot before 2025.01-rc1 exhibits an off-by-one error and resultant heap mem sqfs_search_dir in Das U-Boot before 2025.01-rc1 exhibits an off-by-one error and resultant heap memory corruption for squashfs directory listing because the path separator is not considered in a size calculation.

CVE-2024-57255 [MEDIUM] CWE-190 CVE-2024-57255: An integer overflow in sqfs_resolve_symlink in Das U-Boot before 2025.01-rc1 occurs via a crafted sq An integer overflow in sqfs_resolve_symlink in Das U-Boot before 2025.01-rc1 occurs via a crafted squashfs filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.

CVE-2024-57256 [MEDIUM] CWE-190 CVE-2024-57256: An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (addin An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (adding one to an le32 variable) via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.

CVE-2024-57257 [LOW] CWE-674 CVE-2024-57257: A stack consumption issue in sqfs_size in Das U-Boot before 2025.01-rc1 occurs via a crafted squashf A stack consumption issue in sqfs_size in Das U-Boot before 2025.01-rc1 occurs via a crafted squashfs filesystem with deep symlink nesting.

CVE-2024-42040 [HIGH] CWE-120 CVE-2024-42040: Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (38 Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

CVE-2022-2347 [HIGH] CWE-122 CVE-2022-2347: There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the le There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a `wLength` greater than 4096 bytes, th

CVE-2022-33967 [HIGH] CWE-787 CVE-2022-33967: squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a h squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.

CVE-2022-33103 [HIGH] CWE-787 CVE-2022-33103: Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the fu Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function sqfs_readdir().

CVE-2022-34835 [CRITICAL] CWE-787 CVE-2022-34835: In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer over In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the corruption of the return address pointer of the do_i2c_md function.

CVE-2022-30790 [HIGH] CVE-2022-30790: Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552. Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552.

CVE-2022-30767 [CRITICAL] CVE-2022-30767: nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbound 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.

CVE-2021-27138 [HIGH] CVE-2021-27138: The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT. The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.

CVE-2021-27097 [HIGH] CVE-2021-27097: The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT. The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.

CVE-2020-10648 [HIGH] CWE-20 CVE-2020-10648: Das U-Boot through 2020.01 allows attackers to bypass verified boot restrictions and subsequently bo Das U-Boot through 2020.01 allows attackers to bypass verified boot restrictions and subsequently boot arbitrary images by providing a crafted FIT image to a system configured to boot the default configuration.

CVE-2020-8432 [CRITICAL] CWE-415 CVE-2020-8432: In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() f In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double freeing may result in a write-what-where condition, allowing an attacker to execute arbitrary code. NOTE: this vulnerablity was introduced when attempting to fix a memory leak identified by static analysis.