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
19 Feb 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. This update for grub2 fixes the following issues. • https://access.redhat.com/security/cve/CVE-2024-45779 • CWE-125: Out-of-bounds Read CWE-190: Integer Overflow or Wraparound •
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
19 Feb 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. This update for grub2 fixes the following issues. Fixed strcpy overflow in ufs. • 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: 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
19 Feb 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: 6.7EPSS: 0%CPEs: 20EXPL: 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
19 Feb 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: 6.7EPSS: 0%CPEs: 20EXPL: 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
19 Feb 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: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2024-56737 – SUSE Security Advisory - SUSE-SU-2025:0586-1
https://notcve.org/view.php?id=CVE-2024-56737
29 Dec 2024 — GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem. This update for grub2 fixes the following issues. Fixed strcpy overflow in ufs. Fixed a heap-based buffer overflow in hfs. Fixed strcpy overflow in hfs. • https://savannah.gnu.org/bugs/?66599 • CWE-122: Heap-based Buffer Overflow •
CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 0CVE-2024-56738 – SUSE Security Advisory - SUSE-SU-2025:02706-1
https://notcve.org/view.php?id=CVE-2024-56738
29 Dec 2024 — GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks. This update for grub2 fixes the following issues. Fixed side-channel attack due to not constant-time algorithm in grub_crypto_memcmp. Fixed test -f and -s do not work properly over the network files served via tftp and http. Skip mount point in grub_find_device function. • https://savannah.gnu.org/bugs/?66603 • CWE-208: Observable Timing Discrepancy •
CVSS: 3.3EPSS: 0%CPEs: 4EXPL: 0CVE-2024-1048 – Grub2: grub2-set-bootflag can be abused by local (pseudo-)users
https://notcve.org/view.php?id=CVE-2024-1048
06 Feb 2024 — A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks. Se encontró una falla en la utilidad grub2-set-bootflag de grub2. Después de la corrección ... • http://www.openwall.com/lists/oss-security/2024/02/06/3 • CWE-459: Incomplete Cleanup •
CVSS: 7.2EPSS: 0%CPEs: 4EXPL: 0CVE-2023-4001 – Grub2: bypass the grub password protection feature
https://notcve.org/view.php?id=CVE-2023-4001
15 Jan 2024 — An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was in... • http://www.openwall.com/lists/oss-security/2024/01/15/3 • CWE-290: Authentication Bypass by Spoofing •
CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 1CVE-2023-4692 – Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution
https://notcve.org/view.php?id=CVE-2023-4692
04 Oct 2023 — An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved. Se encontró una falla de escritura fuera de los límites en el controlador del sistema de archivos NTFS de grub2. • https://access.redhat.com/errata/RHSA-2024:2456 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •