CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 0CVE-2025-0678 – Grub2: squash4: integer overflow may lead to heap based out-of-bounds write when reading data
https://notcve.org/view.php?id=CVE-2025-0678
03 Mar 2025 — A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciously crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the direct_read() will perform a heap based out-of-bounds write during d... • https://access.redhat.com/security/cve/CVE-2025-0678 • CWE-190: Integer Overflow or Wraparound CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 19EXPL: 0CVE-2024-45782 – Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)
https://notcve.org/view.php?id=CVE-2024-45782
03 Mar 2025 — A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass. • https://access.redhat.com/security/cve/CVE-2024-45782 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •
CVSS: 4.1EPSS: 0%CPEs: 16EXPL: 0CVE-2024-45778 – Grub2: fs/bfs: integer overflow in the bfs parser.
https://notcve.org/view.php?id=CVE-2024-45778
03 Mar 2025 — A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash. • https://access.redhat.com/security/cve/CVE-2024-45778 • CWE-190: Integer Overflow or Wraparound •
CVSS: 6.0EPSS: 0%CPEs: 18EXPL: 0CVE-2024-45779 – Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
https://notcve.org/view.php?id=CVE-2024-45779
03 Mar 2025 — An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash. • https://access.redhat.com/security/cve/CVE-2024-45779 • CWE-125: Out-of-bounds Read CWE-190: Integer Overflow or Wraparound •
CVSS: 6.7EPSS: 0%CPEs: 16EXPL: 0CVE-2024-45780 – Grub2: fs/tar: integer overflow causes heap oob write
https://notcve.org/view.php?id=CVE-2024-45780
03 Mar 2025 — A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections. • https://access.redhat.com/security/cve/CVE-2024-45780 • CWE-787: Out-of-bounds Write •
CVSS: 6.4EPSS: 0%CPEs: 16EXPL: 0CVE-2025-0689 – Grub2: udf: heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
https://notcve.org/view.php?id=CVE-2025-0689
03 Mar 2025 — When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protecti... • https://access.redhat.com/security/cve/CVE-2025-0689 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.4EPSS: 0%CPEs: 16EXPL: 0CVE-2025-1125 – Grub2: fs/hfs: integer overflow may lead to heap based out-of-bounds write
https://notcve.org/view.php?id=CVE-2025-1125
03 Mar 2025 — When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This... • https://access.redhat.com/security/cve/CVE-2025-1125 • CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 16EXPL: 0CVE-2025-0690 – Grub2: read: integer overflow may lead to out-of-bounds write
https://notcve.org/view.php?id=CVE-2025-0690
24 Feb 2025 — The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence. • https://access.redhat.com/security/cve/CVE-2025-0690 • CWE-787: Out-of-bounds Write •
CVSS: 7.6EPSS: 0%CPEs: 24EXPL: 0CVE-2025-0624 – Grub2: net: out-of-bounds write in grub_net_search_config_file()
https://notcve.org/view.php?id=CVE-2025-0624
19 Feb 2025 — A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot inf... • https://access.redhat.com/security/cve/CVE-2025-0624 • CWE-787: Out-of-bounds Write •
CVSS: 6.4EPSS: 0%CPEs: 15EXPL: 0CVE-2025-0622 – Grub2: command/gpg: use-after-free due to hooks not being removed on module unload
https://notcve.org/view.php?id=CVE-2025-0622
18 Feb 2025 — A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass secure boot protections. • https://access.redhat.com/security/cve/CVE-2025-0622 • CWE-416: Use After Free •