Medium [CVE-2024-45783] Grub2: fs/hfs+: refcount can be decremented twice
This medium-severity Red Hat Linux advisory covers CVE-2024-45783 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A flaw was found in grub2. When failing to mount an HFS+ grub, the hfsplus filesystem driver doesn't properly set an ERRNO value.
This issue may lead to a NULL pointer access. Red Hat severity: Moderate — CVSS 4.4 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-911. Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat OpenShift Container Platform 4.
Red Hat lists Red Hat Enterprise Linux 10 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.
Red Hat fixing advisory: RHSA-2025:6990.
Affected products named by the advisory: Red Hat package: grub2.
Is CVE-2024-45783 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2024-45783 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-2024-45783?
Upgrade to a fixed release named by Red Hat:
- grub2-1:2.06-104.el9_6
- RHSA-2025:6990
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
- grub2-1:2.06-104.el9_6
- RHSA-2025:6990
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 20 days ago·verify at source
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