Public vulnerability disclosure
CVE-2025-0624
Grub2: net: out-of-bounds write in grub_net_search_config_file()
publishedCWE-787
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
Technical severity7.6 highCVSS 3.1 · CNA: redhat
Published2025-02-19Source updated 2026-11-04
Collected2026-11-042 attributed sources
Fixes and workarounds
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
grub2
https://www.gnu.org/software/grub/ |
≥ 0; ≤ 2.12 (affected, semver)
Other versions: unaffected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-0.87.el7_9.15; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-162.el8_10; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-87.el8_2.13; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-99.el8_4.12; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-99.el8_4.12; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-99.el8_4.12; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-123.el8_6.18; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-123.el8_6.18; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-123.el8_6.18; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.02-152.el8_8.2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.06-94.el9_5; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.06-27.el9_0.22; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.06-61.el9_2.10; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
≥ 1:2.06-86.el9_4.2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.12 Red Hat openshift/ose-rhel-coreos-8
https://catalog.redhat.com/software/containers/ |
≥ 412.86.202503310142-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.13 Red Hat openshift/ose-rhel-coreos-9
https://catalog.redhat.com/software/containers/ |
≥ 413.92.202504070146-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.14 Red Hat openshift/ose-rhel-coreos-9
https://catalog.redhat.com/software/containers/ |
≥ 414.92.202505141057-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.15 Red Hat openshift/ose-rhel-coreos-9
https://catalog.redhat.com/software/containers/ |
≥ 415.92.202504282058-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.16 Red Hat openshift/ose-rhel-coreos-9
https://catalog.redhat.com/software/containers/ |
≥ 416.94.202503252048-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.17 Red Hat openshift/ose-rhel-coreos-9
https://catalog.redhat.com/software/containers/ |
≥ 417.94.202503241418-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat OpenShift Container Platform 4.18 Red Hat openshift/ose-rhel-coreos-9
https://catalog.redhat.com/software/containers/ |
≥ 418.94.202504021150-0; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 10 Red Hat grub2
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unaffected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.6 high |
CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2025:2521CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2653CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2655CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2675CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2784CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2799CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2867CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:2869CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3297CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3301CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3367CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3396CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3573CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3577CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:3780CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:4422CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2025:7702CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2025-0624CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2346112CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://security.netapp.com/advisory/ntap-20250516-0006/ADP: CVE
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