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Rocky Linux: CVE-2022-3775: grub2 (Multiple Advisories)

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Rocky Linux: CVE-2022-3775: grub2 (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:L/Au:S/C:N/I:C/A:C)
Published
12/19/2022
Created
03/13/2024
Added
03/12/2024
Modified
01/30/2025

Description

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. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.

Solution(s)

  • rocky-upgrade-grub2-debuginfo
  • rocky-upgrade-grub2-debugsource
  • rocky-upgrade-grub2-efi-ia32
  • rocky-upgrade-grub2-efi-ia32-cdboot
  • rocky-upgrade-grub2-efi-x64
  • rocky-upgrade-grub2-efi-x64-cdboot
  • rocky-upgrade-grub2-pc
  • rocky-upgrade-grub2-tools
  • rocky-upgrade-grub2-tools-debuginfo
  • rocky-upgrade-grub2-tools-efi
  • rocky-upgrade-grub2-tools-efi-debuginfo
  • rocky-upgrade-grub2-tools-extra
  • rocky-upgrade-grub2-tools-extra-debuginfo
  • rocky-upgrade-grub2-tools-minimal
  • rocky-upgrade-grub2-tools-minimal-debuginfo

References

  • https://attackerkb.com/topics/cve-2022-3775
  • CVE - 2022-3775
  • https://errata.rockylinux.org/RLSA-2023:0049
  • https://errata.rockylinux.org/RLSA-2023:0752
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