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TI-2024-30743 Aliases CVE-2024-45776GHSA-8852-57vj-5pjq

Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.

Priority LOW 31CWE-787Published · Updated

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
Partial Red Hat: 2 fixed, 1 without a fix

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

Summary

When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00305 23rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

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

VendorProductAffected versionsFixed inStatusSource
—grub2up to 2.12—No fix listedCNA
Red HatRed Hat Enterprise Linux 10—1:2.12-15.el10_0Patch availableCNA
Red HatRed Hat Enterprise Linux 9—1:2.06-104.el9_6Patch availableCNA
Red HatRed Hat Enterprise Linux 7——Not affectedCNA
Red HatRed Hat Enterprise Linux 8——Not affectedCNA
Red HatRed Hat OpenShift Container Platform 4——No fix listedCNA
  • grub2 Vendor— Affected up to 2.12 Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 1:2.12-15.el10_0 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 1:2.06-104.el9_6 Patch available 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 OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 5

CPEVersionsRoleVendor
cpe:/o:redhat:enterprise_linux:10.010.0—Red Hat
cpe:/o:redhat:enterprise_linux:9::baseos9—Red Hat
cpe:/o:redhat:rhel_els:77—Red Hat
cpe:/a:redhat:enterprise_linux:88—Red Hat
cpe:/a:redhat:openshift:44—Red Hat
  • cpe:/o:redhat:enterprise_linux:10.0 Versions 10.0 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:9::baseos Versions 9 — ·Red Hat
  • cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:8 Versions 8 — ·Red Hat
  • cpe:/a:redhat:openshift:4 Versions 4 — ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2025:16154 Released 2025-09-18 · Red Hat rating Moderate
    grub2 security update
    • Red Hat Enterprise Linux BaseOS (v. 10) grub2-1:2.12-15.el10_0, grub2-common-1:2.12-15.el10_0, grub2-efi-aa64-1:2.12-15.el10_0 +13
  • RHSA-2025:6990 Released 2025-05-13 · Red Hat rating Moderate
    grub2 security update
    • Red Hat Enterprise Linux BaseOS (v. 9) grub2-1:2.06-104.el9_6, grub2-common-1:2.06-104.el9_6, grub2-efi-aa64-1:2.06-104.el9_6 +13

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 and 3 more products — RHSA-2025:6990

    8 records Highest priority Priority LOW 8 LOW

    Other records, highest priority first

    • TI-2025-00584 Grub2: read: integer overflow may lead to out-of-bounds writePriority LOW 31
    • TI-2024-30748 Grub2: fs/ufs: oob write in the heapPriority LOW 31
    • TI-2024-30741 Grub2: reader/jpeg: heap oob write during jpeg parsingPriority LOW 31
    Show all 8 records → Advisory →
  • Advisory ·

    Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7 and 3 more products — RHSA-2025:16154

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2024-30748 Grub2: fs/ufs: oob write in the heapPriority LOW 31
    • TI-2025-00571 Grub2: ufs: integer overflow may lead to heap based out-of-bounds write when handling symlinksPriority LOW 30
    • TI-2025-00523 Grub2: command/gpg: use-after-free due to hooks not being removed on module unloadPriority LOW 30
    Show all 5 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:16154
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:6990
Not affected: 2 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-45776
  2. 2026-10-03 Alias added: GHSA-8852-57vj-5pjq
  3. 2026-10-21 Affected versions changed · CNA
  4. 2026-10-21 Affected versions changed · Red Hat
  5. 2026-10-21 Affected versions changed · CNA
  6. 2026-10-22 Affected versions changed · Red Hat

References

Advisory 2

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