What’s Vulnerable › Vulnerabilities

CVE-2023-4949: Memory Corruption Vulnerability in Grub-Legacy's XFS Implementation

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-10 · updated 2026-06-17
• Weakness: CWE-119

Description

An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.

Affected products

• GNU Grub: through 0.97
• xen: all versions

References

• https://xenbits.xenproject.org/xsa/advisory-443.html
• https://xenbits.xenproject.org/xsa/advisory-443.html

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