GRUB2 (HFS+ filesystem parser): A reference count can be decremented twice, producing a use-after-free

CVE-2024-45783Firmware, BMC & network fabricGRUB2 2025 batchcurated

Impact

A reference count can be decremented twice, producing a use-after-free. Lower severity on its own but a usable link in a chain with the write primitives in the same batch.

Who can reach it

Attacker-supplied HFS+ volume.

What to do

grub2 package update + reboot; or drop the module.

References

https://nvd.nist.gov/vuln/detail/CVE-2024-45783 https://www.openwall.com/lists/oss-security/2025/02/18/3

This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.