CVE-2024-56737
published 2024-12-29CVE-2024-56737: GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
PriorityP345high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.72%
49.8th percentile
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | grub2 | < grub2 2.12-6 (forky) | grub2 2.12-6 (forky) |
| gnu | grub2 | <= 2.12 | — |
| gnu | grub2 | >= 0 < 2.12-6 | 2.12-6 |
| gnu | grub2 | >= 0 < 2.12-6 | 2.12-6 |
| gnu | grub2 | 2.00 – 2.12 | — |
| msrc | azl3_grub2_2.06-24_on_azure_linux_3.0 | — | — |
| msrc | azl3_grub2_2.06-25_on_azure_linux_3.0 | — | — |
| msrc | cbl2_grub2_2.06-14_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_grub2_2.06-15_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_msrc6.7MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
grub2: heap-based buffer overflow
vendor_redhat·2024-12-29·CVSS 8.8
CVE-2024-56737 [HIGH] CWE-122 grub2: heap-based buffer overflow
grub2: heap-based buffer overflow
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
A flaw was found in the HFS file system driver in grub2. This issue allows a local attacker to trigger a heap-based buffer overflow via a specially crafted sblock in a malicious HFS file system, causing memory corruption, unexpected behavior, and denial of service.
Statement: To exploit this flaw, an attacker needs to trick a user into running grub2 with a specially crafted HFS file system image, limiting the exposure of this flaw. For this reason, this vulnerability has been rated with a Moderate severity.
The grub2 package as shipped in Red Hat Enterprise Linux 7, 8, 9 and in Red Hat OpenShift Container Platform 4 is not affecte
Microsoft
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
vendor_msrc·2024-12-10·CVSS 6.7
CVE-2024-56737 [HIGH] CWE-122 GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
mitre: mitre
Customer Action Requi
Debian
CVE-2024-56737: grub2 - GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c v...
vendor_debian·2024·CVSS 8.8
CVE-2024-56737 [HIGH] CVE-2024-56737: grub2 - GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c v...
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 2.12-6)
sid: resolved (fixed in 2.12-6)
trixie: resolved (fixed in 2.12-6)
OSV
CVE-2024-56737: GNU GRUB (aka GRUB2) through 2
osv·2024-12-29·CVSS 8.8
CVE-2024-56737 [HIGH] CVE-2024-56737: GNU GRUB (aka GRUB2) through 2
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
GHSA
GHSA-9vr3-263w-c6mj: GNU GRUB (aka GRUB2) through 2
ghsa_unreviewed·2024-12-29
CVE-2024-56737 [HIGH] CWE-122 GHSA-9vr3-263w-c6mj: GNU GRUB (aka GRUB2) through 2
GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.
No detection rules found.
No public exploits indexed.
2024-12-29
Published