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update: grub
Name: grub CVEs: CVE-2024-56738, CVE-2024-56738, CVE-2024-45774, CVE-2024-45774, CVE-2024-45775 CVE-2024-45776, CVE-2024-45777, CVE-2024-45778, CVE-2024-45779, CVE-2024-45780, CVE-2024-45781, CVE-2024-45782, CVE-2024-45783, CVE-2025-0622, CVE-2025-0624, CVE-2025-0677, CVE-2025-0678, CVE-2025-0684, CVE-2025-0685, CVE-2025-0686, CVE-2025-0689, CVE-2025-0690, CVE-2025-1118, CVE-2025-1125, CVE-2025-54770, CVE-2025-54771, CVE-2025-61661, CVE-2025-61662, CVE-2025-61663, CVE-2025-61664 CVSSs: 5.3, 6.7, 5.2, 6.7, 6.7, 4.1, 4.1, 6.7, 6.7, 6.7, 4.4, 6.4, 7.7, 6.4, 6.4, 6.4, 6.4, 6.4, 6.4, 6.1, 4.4, 6.4, 4.9, 4.9, 4.8, 4.9, 4.9, 4.9 Action Needed: TBD
Summary:
- CVE-2024-56738: GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
- CVE-2024-45774: reader/jpeg: Heap OOB Write during JPEG parsing.
- CVE-2024-45775: commands/extcmd: Missing check for failed allocation.
- CVE-2024-45776: grub-core/gettext: Integer overflow leads to Heap OOB Write and Read.
- CVE-2024-45777: grub-core/gettext: Integer overflow leads to Heap OOB Write.
- CVE-2024-45778: fs/bfs: Integer overflow in the BFS parser.
- CVE-2024-45779: fs/bfs: Integer overflow leads to Heap OOB Read (Write?) in the BFS parser.
- CVE-2024-45780: fs/tar: Integer Overflow causes Heap OOB Write.
- CVE-2024-45781: fs/ufs: OOB write in the heap.
- CVE-2024-45782: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)
- CVE-2024-45783: fs/hfs+: refcount can be decremented twice
- CVE-2025-0622 : command/gpg: Use-after-free due to hooks not being removed on module unload
- CVE-2025-0624 : net: Out-of-bounds write in grub_net_search_config_file()
- CVE-2025-0677 : UFS: Integer overflow may lead to heap based out-of-bounds write when handling symlinks
- CVE-2025-0678: squash4: Integer overflow may lead to heap based out-of-bounds write when reading data
- CVE-2025-0684: reiserfs: Integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
- CVE-2025-0685: jfs: Integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
- CVE-2025-0686: romfs: Integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
- CVE-2025-0689: udf: Heap based buffer overflow in grub_udf_read_block() may lead to arbitrary code execution
- CVE-2025-0690: read: Integer overflow may lead to out-of-bounds write
- CVE-2025-1118: commands/dump: The dump command is not in lockdown when secure boot is enabled
- CVE-2025-1125: fs/hfs: Integer overflow may lead to heap based out-of-bounds write
- all above: https://bugs.gentoo.org/950250
- CVE-2025-54770: A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability
- CVE-2025-54771: A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
- CVE-2025-61661: A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.
- CVE-2025-61662: A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
- CVE-2025-61663: A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability. Impact on the data integrity and confidentiality is also not discarded.
- CVE-2025-61664: A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.
- all above: https://seclists.org/oss-sec/2025/q4/191
refmap.gentoo:
Added: CVE-2024-56738, CVE-2024-45774, CVE-2024-45775, CVE-2024-45776, CVE-2024-45777, CVE-2024-45778, CVE-2024-45779, CVE-2024-45780, CVE-2024-45781, CVE-2024-45782, CVE-2024-45783, CVE-2025-0622, CVE-2025-0624, CVE-2025-0677, CVE-2025-0678, CVE-2025-0684, CVE-2025-0685, CVE-2025-0686, CVE-2025-0689, CVE-2025-0690, CVE-2025-1118, CVE-2025-1125
