Medium [CVE-2024-45777] Grub2: grub-core/gettext: integer overflow leads to heap oob write.
This medium-severity Red Hat Linux advisory covers CVE-2024-45777 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A flaw was found in grub2. The calculation of the translation buffer when reading a language.mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write.
This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections. The Red Hat Product Security team has rated this vulnerability with a Moderate severity due to the high privileges required to exploit this flaw.
Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat OpenShift Container Platform 4.
Will not fix / out of support: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8. Red Hat fixing advisory: RHSA-2025:20532.
Affected products named by the advisory: Red Hat package: grub2.
Is CVE-2024-45777 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2024-45777 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2024-45777?
Upgrade to a fixed release named by Red Hat:
- grub2-1:2.06-114.el9_7
- RHSA-2025:20532
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
- grub2-1:2.06-114.el9_7
- RHSA-2025:20532
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
Mitigation
Upgrade to a fixed release: grub2-1:2.06-114.el9_7, RHSA-2025:20532. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
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