Vulnerabilities

A Use-After-Free vulnerability has been discovered in GRUB's gettext module.

A flaw was found in grub2.

A flaw was found in grub2.

A flaw was found in grub2.

A flaw was found in grub2.

A flaw was found in the HFS filesystem.

A stack overflow flaw was found when reading a BFS file system.

An integer overflow flaw was found in the BFS file system driver in grub2.

A flaw was found in grub2.

When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers.

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 o…

A flaw was found in grub2.

GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.

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.

GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit.

A flaw was found in the grub2-set-bootflag utility of grub2.

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 out-of-bounds write flaw was found in grub2's NTFS filesystem driver.

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver.

There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2.

The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems.

Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position.

Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value.

When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size.

A buffer overflow was found in grub_font_construct_glyph().