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TI-2024-30748 Aliases CVE-2024-45781GHSA-2xfx-cg6v-cwqv

Grub2: fs/ufs: oob write in the heap

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, 3 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

A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent 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, 3 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——No fix listedCNA
Red HatRed Hat Enterprise Linux 8——No fix listedCNA
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 — No fix listed CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed 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-2024-30743 Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.Priority 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-2024-30743 Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.Priority 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 Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Out of support scope
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

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-45781
  2. 2026-10-03 Alias added: GHSA-2xfx-cg6v-cwqv
  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