Grub2: command/gpg: use-after-free due to hooks not being removed on module unload
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| unaffected |
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| Red Hat | Red Hat Enterprise Linux 10 | affected |
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| Red Hat | Red Hat Enterprise Linux 9 | affected |
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| Red Hat | Red Hat Enterprise Linux 7 | unknown | — | ||||||
| Red Hat | Red Hat Enterprise Linux 8 | unknown | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | affected | — |
No data.
| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Enterprise Linux 9 | |||
| grub2-1:2.06-104.el9_6 | cpe:/o:redhat:enterprise_linux:9 | RHSA-2025:6990 | 2025-05-13T00:00:00Z |
No data available yet.
Vendor 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 | ID | Title |
|---|---|---|
Debian DLA |
DLA-4685-1 | grub2 security update |
EUVD |
EUVD-2025-4773 | A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass secure boot protections. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.283% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:8 |
cpe:/a:redhat:enterprise_linux:8 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | ||
| Vendors & Products |
Redhat rhivos
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhivos
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| CPEs | cpe:/o:redhat:rhivos:1 | |
| Vendors & Products |
Redhat rhivos
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| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:10.0 | |
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:10 |
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:9 |
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:9::baseos | |
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass secure boot protections. | |
| Title | Grub2: command/gpg: use-after-free due to hooks not being removed on module unload | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| Weaknesses | CWE-416 | |
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| References |
| |
| Metrics |
cvssV3_1
|