synced 11 MIN AGO
01 Record

CVE-2025-0677

Grub2: ufs: integer overflow may lead to heap based out-of-bounds write when handling symlinks

MediumPUBLISHEDCNA: redhat
CNA base score6.4 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
View raw JSON

02 Description

Grub2: ufs: integer overflow may lead to heap based out-of-bounds write when handling symlinks

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.32% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 25.6% of scored records. A rank, not a probability.
NVD base score
6.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-10-21.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-02-19 18:23Z1 YR AGO
Last updated
2026-10-21 20:12Z8 DAYS AGO
Reserved
2025-01-23
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 6.4)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weaknesses
Data version
5.2
Document digest
fbe62d9d672bc1fc2b9ce3eff89a332155474fa68a289e1d139e16139461c48c

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat Enterprise Linux 10Not specified—
Red HatRed Hat Enterprise Linux 9Not specified—
Red HatRed Hat Enterprise Linux 7Not specified—
Red HatRed Hat Enterprise Linux 8Not specified—
Red HatRed Hat OpenShift Container Platform 4Not specified—

06 References

07 Fixed in

AlmaLinux 9

  • grub2-common
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-aa64
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-aa64-cdboot
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-aa64-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-x64
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-x64-cdboot
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-x64-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-pc
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-pc-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-ppc64le
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-ppc64le-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools-efi
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools-extra
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools-minimal
    Fixed in 1:2.06-104.el9_6.alma.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • grub2-common
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-efi-aa64-modules
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-efi-x64-modules
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-pc-modules
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-ppc64le-modules
    Fixed in 1:2.12-15.el10_0.alma.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • grub2-common
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-aa64
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-aa64-cdboot
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-aa64-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-x64
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-x64-cdboot
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-efi-x64-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-pc
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-pc-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-ppc64le
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-ppc64le-modules
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools-efi
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools-extra
    Fixed in 1:2.06-104.el9_6.alma.1
  • grub2-tools-minimal
    Fixed in 1:2.06-104.el9_6.alma.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • grub2-common
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-efi-aa64-modules
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-efi-x64-modules
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-pc-modules
    Fixed in 1:2.12-15.el10_0.alma.1
  • grub2-ppc64le-modules
    Fixed in 1:2.12-15.el10_0.alma.1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • grub2
    Fixed in 2.06-13+deb12u2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • grub2
    Fixed in 2.12-6

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • grub2
    Fixed in 2.12-6

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • grub2-signed
    No fix yet
  • grub2-unsigned
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • grub2
    No fix yet
  • grub2-signed
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.