TI-2024-30747 Aliases CVE-2024-45780 GHSA-xxc4-h4cm-j5r2

Grub2: fs/tar: integer overflow causes heap oob write

LOW 31CWE-787Published 2025-03-03 · Updated 2026-11-05

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00293 22nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	grub2	up to 2.12	—	No fix listed	CNA
Red Hat	Red Hat Enterprise Linux 10	—	—	Not affected	CNA
Red Hat	Red Hat Enterprise Linux 7	—	—	Not affected	CNA
Red Hat	Red Hat Enterprise Linux 8	—	—	Not affected	CNA
Red Hat	Red Hat Enterprise Linux 9	—	—	Not affected	CNA
Red Hat	Red Hat OpenShift Container Platform 4	—	—	Not affected	CNA

grub2 Vendor— Affected up to 2.12 Fixed in — No fix listed CNA
Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — Not affected CNA
Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — Not affected CNA
Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — Not affected CNA
Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — Not affected CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gnu:grub2::::::::	up to 2.12	Vulnerable	GNU

cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* Versions up to 2.12 Vulnerable ·GNU

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 5 products

Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat OpenShift Container Platform 4

Timeline

2026-10-02 Threatist record created from CVE-2024-45780
2026-10-03 Alias added: GHSA-xxc4-h4cm-j5r2
2026-10-21 Affected versions changed · CNA

References

Advisory 1

https://access.redhat.com/security/cve/CVE-2024-45780

Other 2

TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8

See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences