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CVE-2023-4387— Kernel: vmxnet3: use-after-free in vmxnet3_rq_alloc_rx_buf()

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 8
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.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux Kernel存在安全漏洞，该漏洞源于VMware vmxnet3 以太网网卡驱动程序的组件vmxnet3_rq_alloc_rx_buf存在释放后重用漏洞。攻击者可利用该漏洞导致系统崩溃和内核信息泄露。

CVSS 7.1 · High EPSS 0.24% · P14
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I. Basic Information for CVE-2023-4387

Vulnerability Information
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Vulnerability Title
Kernel: vmxnet3: use-after-free in vmxnet3_rq_alloc_rx_buf()
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free flaw was found in vmxnet3_rq_alloc_rx_buf in drivers/net/vmxnet3/vmxnet3_drv.c in VMware's vmxnet3 ethernet NIC driver in the Linux Kernel. This issue could allow a local attacker to crash the system due to a double-free while cleaning up vmxnet3_rq_cleanup_all, which could also lead to a kernel information leak problem.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux Kernel存在安全漏洞，该漏洞源于VMware vmxnet3 以太网网卡驱动程序的组件vmxnet3_rq_alloc_rx_buf存在释放后重用漏洞。攻击者可利用该漏洞导致系统崩溃和内核信息泄露。
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
Red Hat Red Hat Enterprise Linux 8 0:4.18.0-425.3.1.el8 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat Red Hat Enterprise Linux 9 0:5.14.0-162.6.1.el9_1 ~ * cpe:/a:redhat:enterprise_linux:9::crb
Red Hat Red Hat Enterprise Linux 9 0:5.14.0-162.6.1.el9_1 ~ * cpe:/a:redhat:enterprise_linux:9::crb
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
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 Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2023-4387

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III. Intelligence Information for CVE-2023-4387

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Patches & Fixes for CVE-2023-4387 (1)

Vendor Advisories for CVE-2023-4387 (4)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-416

V. Comments for CVE-2023-4387

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