VULNERABILITY

SUSE: CVE-2025-0684: SUSE Linux Security Advisory

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SUSE: CVE-2025-0684: SUSE Linux Security Advisory

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
02/19/2025
Created
03/10/2025
Added
02/21/2025
Modified
03/05/2025

Description

A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.

Solution(s)

  • suse-upgrade-grub2
  • suse-upgrade-grub2-arm64-efi
  • suse-upgrade-grub2-arm64-efi-debug
  • suse-upgrade-grub2-arm64-efi-extras
  • suse-upgrade-grub2-branding-upstream
  • suse-upgrade-grub2-i386-pc
  • suse-upgrade-grub2-i386-pc-debug
  • suse-upgrade-grub2-i386-pc-extras
  • suse-upgrade-grub2-i386-xen-debug
  • suse-upgrade-grub2-powerpc-ieee1275
  • suse-upgrade-grub2-powerpc-ieee1275-debug
  • suse-upgrade-grub2-powerpc-ieee1275-extras
  • suse-upgrade-grub2-s390x-emu
  • suse-upgrade-grub2-s390x-emu-debug
  • suse-upgrade-grub2-s390x-emu-extras
  • suse-upgrade-grub2-snapper-plugin
  • suse-upgrade-grub2-systemd-sleep-plugin
  • suse-upgrade-grub2-x86_64-efi
  • suse-upgrade-grub2-x86_64-efi-debug
  • suse-upgrade-grub2-x86_64-efi-extras
  • suse-upgrade-grub2-x86_64-xen
  • suse-upgrade-grub2-x86_64-xen-debug
  • suse-upgrade-grub2-x86_64-xen-extras

References

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