denx vulnerabilities

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Latest denx CVEs

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1. CVE-2026-29009 U-Boot < 2026.07-rc2 Buffer Overflow in nfs_readlink_reply() via NFS READLINK

   Published 2026-07-08

   High·CVSS 8.8 EPSS 0.74%

   U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfs_path_buff buffer by returning multiple relative symlink targe...

2. CVE-2026-29008 U-Boot 2026.04-rc3 Integer Underflow DoS via tcp_rx_state_machine()

   Published 2026-07-08

   High·CVSS 8.7 EPSS 0.71%

   U-Boot through 2026.04-rc3 contains an integer underflow vulnerability in the tcp_rx_state_machine() function (net/tcp.c) that allows a network-adjacent attacker to crash the bootloader by sending a malformed TCP SYN+ACK packet with a manipulated data offset field causing payload...

3. CVE-2026-29007 U-Boot 2026.04-rc3 Out-of-Bounds Read in tcp_rx_state_machine via tcp.c

   Published 2026-07-08

   Medium·CVSS 6.9 EPSS 0.67%

   U-Boot through 2026.04-rc3 contains an out-of-bounds read vulnerability in tcp_rx_state_machine() (net/tcp.c) when CONFIG_PROT_TCP is enabled, allowing remote attackers to read beyond TCP segment boundaries by crafting a malicious packet with a mismatched IP total length and TCP...

4. CVE-2026-46728 Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.

   Published 2026-05-16

   High·CVSS 8.8 EPSS 0.21%

   Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.

5. CVE-2025-24857 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 c...

   Published 2025-12-10

   High·CVSS 7.6 EPSS 0.27%

   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.

6. CVE-2025-45512 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.

   Published 2025-08-05

   Medium·CVSS 6.5 EPSS 0.39%

   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.

7. CVE-2024-57258 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.

   Published 2025-02-18

   High·CVSS 7.8 EPSS 0.25%

   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.

8. CVE-2024-57259 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...

   Published 2025-02-18

   Medium·CVSS 6.8 EPSS 0.37%

   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.

9. CVE-2024-57255 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 memo...

   Published 2025-02-18

   Medium·CVSS 6.8 EPSS 0.37%

   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.

10. CVE-2024-57257 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.

    Published 2025-02-18

    Low·CVSS 2.4 EPSS 0.32%

    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.

11. CVE-2024-57254 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.

    Published 2025-02-18

    Medium·CVSS 6.8 EPSS 0.37%

    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.

12. CVE-2024-57256 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...

    Published 2025-02-18

    Medium·CVSS 6.8 EPSS 0.37%

    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.

13. CVE-2024-42040 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....

    Published 2024-08-23

    High·CVSS 8.1 EPSS 0.60%

    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 th...

14. CVE-2019-6268 RAD SecFlow-2 devices with Hardware 0202, Firmware 4.1.01.63, and U-Boot 2010.12 allow URIs beginning with /.. for Directory Traversal, as demonstrated by reading /etc/shadow.

    Published 2024-03-08

    High·CVSS 7.5 EPSS 0.82%

    RAD SecFlow-2 devices with Hardware 0202, Firmware 4.1.01.63, and U-Boot 2010.12 allow URIs beginning with /.. for Directory Traversal, as demonstrated by reading /etc/shadow.

15. CVE-2022-2347 Unchecked Download size in Uboot

    Published 2022-09-23

    High·CVSS 7.1 EPSS 0.58%

    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...

16. CVE-2022-33967 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 s...

    Published 2022-07-20

    High·CVSS 7.8 EPSS 0.56%

    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...

17. CVE-2022-33103 Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function sqfs_readdir().

    Published 2022-07-01

    High·CVSS 7.8 EPSS 0.46%

    Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function sqfs_readdir().

18. CVE-2022-34835 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 f...

    Published 2022-06-29

    Critical·CVSS 9.8 EPSS 2.3%

    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.

19. CVE-2022-30552 Das U-Boot 2022.01 has a Buffer Overflow.

    Published 2022-06-08

    Medium·CVSS 5.5 EPSS 0.45%

    Das U-Boot 2022.01 has a Buffer Overflow.

20. CVE-2022-30790 Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552.

    Published 2022-06-08

    High·CVSS 7.8 EPSS 0.57%

    Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552.

21. 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....

    Published 2022-05-16

    Critical·CVSS 9.8 EPSS 2.7%

    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.

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

    Published 2021-02-17

    High·CVSS 7.8 EPSS 1.1%

    The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.

23. CVE-2021-27097 The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.

    Published 2021-02-17

    High·CVSS 7.8 EPSS 1.1%

    The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.

24. CVE-2020-10648 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 conf...

    Published 2020-03-19

    High·CVSS 7.8 EPSS 1.4%

    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.

25. 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() function. Double freeing may result in a write-what-where condition, allowing an attacker to execute....

    Published 2020-01-29

    Critical·CVSS 9.8 EPSS 3.1%

    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...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.