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CVE-2024-43102— umtx Kernel panic or Use-After-Free

Quick assessment

Affected
FreeBSD FreeBSD
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.

FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD 存在资源管理错误漏洞，该漏洞源于使用 UMTX_OP_SHM 的 UMTX_SHM_DESTROY 子请求并发删除某些匿名共享内存映射可能会导致表示映射的对象的引用计数减少太多次，从而导致过早释放。

AI Predicted 7.8 Difficulty: Hard EPSS 0.68% · P51
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I. Basic Information for CVE-2024-43102

Vulnerability Information
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Vulnerability Title
umtx Kernel panic or Use-After-Free
Source: CVE Program / CVE List V5
Vulnerability Description
Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early. A malicious code exercizing the UMTX_SHM_DESTROY sub-request in parallel can panic the kernel or enable further Use-After-Free attacks, potentially including code execution or Capsicum sandbox escape.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
FreeBSD 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD 存在资源管理错误漏洞，该漏洞源于使用 UMTX_OP_SHM 的 UMTX_SHM_DESTROY 子请求并发删除某些匿名共享内存映射可能会导致表示映射的对象的引用计数减少太多次，从而导致过早释放。
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
FreeBSD FreeBSD 14.1-RELEASE ~ p4 -

II. Public POCs for CVE-2024-43102

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III. Intelligence Information for CVE-2024-43102

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Same Patch Batch · FreeBSD · 2024-09-05 · 9 CVEs total

CVE-2024-32668 bhyve(8) privileged guest escape via USB controller
CVE-2024-45063 Multiple issues in ctl(4) CAM Target Layer
CVE-2024-43110 Multiple issues in ctl(4) CAM Target Layer
CVE-2024-42416 Multiple issues in ctl(4) CAM Target Layer
CVE-2024-8178 Multiple issues in ctl(4) CAM Target Layer
CVE-2024-41928 bhyve(8) privileged guest escape via TPM device passthrough
CVE-2024-45288 Multiple vulnerabilities in libnv
CVE-2024-45287 Multiple vulnerabilities in libnv

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-416

V. Comments for CVE-2024-43102

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