CVE-2025-54770
Grub2: use-after-free in net_set_vlan
Description
A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:HAttack ComplexityHigh
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:LIntegrityLow
A:LAvailabilityLow
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka Red Hat
Erich Boleyn
individual-devaka grub
Grub2On-prem
Operating SystemsООО «Ред Софт»
commercial·RUaka red soft
GNU
oss-project·USaka g. nu
and 4 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
References
https://access.redhat.com/security/cve/cve-2025-54770
access.redhat.com
https://www.openwall.com/lists/oss-security/2025/11/18/4
openwall.com
https://redos.red-soft.ru/search/?iblock_id=24&q=CVE-2025-54770
redos.red-soft.ru
and 4 more references View all →
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