Exposure of Sensitive System Information to an Unauthorized Control Sphere Affecting grub2 package, versions [0,2.14-rc1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published6 Jul 2025
- disclosed8 May 2025
- creditMaxim Suhanov
Introduced: 8 May 2025
CVE-2025-4382 (opens in a new tab)How to fix?
Upgrade grub2 to version 2.14-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Exposure of Sensitive System Information to an Unauthorized Control Sphere in systems utilizing LUKS-encrypted disks with GRUB configured for TPM-based auto-decryption. An attacker can access unencrypted data and compromise data confidentiality by corrupting the filesystem's superblock to force GRUB into rescue mode where the decryption key remains in system memory.
Note: This is only exploitable if the attacker has physical access to the system.