CVE-2024-45783— Grub2: fs/hfs+: refcount can be decremented twice
Quick assessment
Affected
CVE-2024-45783
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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HFS+ grub挂载失败时未正确设置ERRNO，会导致空指针访问。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| None | None | ≤ 2.12 |
affected |
| Red Hat | Red Hat Enterprise Linux 10 | any |
unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | any |
unknown |
| Red Hat | Red Hat Enterprise Linux 8 | any |
unknown |
| Red Hat | Red Hat Enterprise Linux 9 | 1:2.06-104.el9_6< * |
unaffected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any |
affected |
I. Basic Information for CVE-2024-45783
Vulnerability Information
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Vulnerability Title
Grub2: fs/hfs+: refcount can be decremented twice
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in grub2. When failing to mount an HFS+ grub, the hfsplus filesystem driver doesn't properly set an ERRNO value. This issue may lead to a NULL pointer access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
引用计数的更新不恰当
Source: CVE Program / CVE List V5
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HFS+ grub挂载失败时未正确设置ERRNO，会导致空指针访问。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | - | 0 ~ 2.12 | - |
|
| Red Hat | Red Hat Enterprise Linux 9 | 1:2.06-104.el9_6 ~ * |
cpe:/o:redhat:enterprise_linux:9::baseos
|
|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
II. Public POCs for CVE-2024-45783
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2024-45783 (3)
-
-
2345863 – (CVE-2024-45783) CVE-2024-45783 grub2: fs/hfs+: refcount can be decremented twice issue-tracking x_refsource_REDHAT
-
🔗 RHSA-2025:6990 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
IV. Related Vulnerabilities
Same weakness: CWE-911
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V. Comments for CVE-2024-45783
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