SB2025091829 - Red Hat Enterprise Linux 10 update for grub2

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Main Vulnerability Database SB2025091829

SB2025091829 - Red Hat Enterprise Linux 10 update for grub2

Published: September 18, 2025

Security Bulletin ID SB2025091829
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Integer overflow (CVE-ID: CVE-2024-45776)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow within the grub_mofile_open() function when reading .mo file. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.


2) Out-of-bounds write (CVE-ID: CVE-2024-45781)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when ready symbolic link name from a UFS filesystem. A local user can trigger an out-of-bounds write and execute arbitrary code.


3) Use-after-free (CVE-ID: CVE-2025-0622)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error caused by not removing hooks when the related module is being unloaded. A local user can execute arbitrary code with elevated privileges.



4) Integer overflow (CVE-ID: CVE-2025-0677)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow when performing a symlink lookup within the grub_ufs_lookup_symlink() function in UFS filesystem driver. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.


5) Security features bypass (CVE-ID: CVE-2025-1118)

CWE-ID: CWE-254 - Security Features

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the dump command is not blocked when grub is in lockdown mode. A local user can read any data from the system memory.


Remediation

Install update from vendor's website.

References