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CVE-2025-54770— Grub2: use-after-free in net_set_vlan

CVSS 4.9 · Medium EPSS 0.02% · P6

Affected Version Matrix 6

VendorProductVersion RangeStatus
GNUgrub2≤ 2.14affected
Red HatRed Hat Enterprise Linux 10anyaffected
Red HatRed Hat Enterprise Linux 7anyaffected
Red HatRed Hat Enterprise Linux 8anyaffected
Red HatRed Hat Enterprise Linux 9anyaffected
Red HatRed Hat OpenShift Container Platform 4anyaffected
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I. Basic Information for CVE-2025-54770

Vulnerability Information
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Vulnerability Title
Grub2: use-after-free in net_set_vlan
Source: NVD (National Vulnerability Database)
Vulnerability 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 An attacker who can execute this command can force the system to access memory locations that are no longer valid.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
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
无效指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
GNU GRUB 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在安全漏洞，该漏洞源于网络模块中的释放后重用问题，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
GNUgrub2 0 ~ 2.14 -
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2025-54770

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III. Intelligence Information for CVE-2025-54770

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Vendor Advisories for CVE-2025-54770 (1)

Mailing List Discussions for CVE-2025-54770 (1)

Same Patch Batch · GNU · 2025-11-18 · 6 CVEs total

CVE-2025-616627.8 HIGHGrub2: missing unregister call for gettext command may lead to use-after-free
CVE-2025-616634.9 MEDIUMGrub2: missing unregister call for normal commands may lead to use-after-free
CVE-2025-616644.9 MEDIUMGrub2: missing unregister call for normal_exit command may lead to use-after-free
CVE-2025-547714.9 MEDIUMGrub2: use-after-free in grub_file_close()
CVE-2025-616614.8 MEDIUMGrub2: grub2: out-of-bounds write via malicious usb device

IV. Related Vulnerabilities

Same product: grub2
Same vendor: GNU
Same weakness: CWE-825

V. Comments for CVE-2025-54770

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