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CVE-2023-6238— Kernel: nvme: memory corruption via unprivileged user passthrough

Quick assessment

Affected
n/a kernel
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 NVM Express (NVMe) 驱动程序中发现缓冲区溢出漏洞。

CVSS 6.7 · Medium EPSS 0.29% · P20
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I. Basic Information for CVE-2023-6238

Vulnerability Information
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Vulnerability Title
Kernel: nvme: memory corruption via unprivileged user passthrough
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability was found in the NVM Express (NVMe) driver in the Linux kernel. Only privileged user could specify a small meta buffer and let the device perform larger Direct Memory Access (DMA) into the same buffer, overwriting unrelated kernel memory, causing random kernel crashes and memory corruption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
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 NVM Express (NVMe) 驱动程序中发现缓冲区溢出漏洞。
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
- kernel - -
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 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Fedora Fedora - -

II. Public POCs for CVE-2023-6238

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III. Intelligence Information for CVE-2023-6238

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Vendor Advisories for CVE-2023-6238 (2)

Same Patch Batch · n/a · 2023-11-21 · 7 CVEs total

CVE-2023-49103 10.0 CRITICAL ownCloud 安全漏洞
CVE-2023-49105 9.8 CRITICAL ownCloud 安全漏洞
CVE-2023-49104 8.7 HIGH ownCloud 安全漏洞
CVE-2023-45886 F5 BIG-IP和BIG-IQ 安全漏洞
CVE-2023-46935 EyouCms 安全漏洞
CVE-2023-48124 SUP Online Shopping 安全漏洞

IV. Related Vulnerabilities

Same product: kernel
Same vendor: n/a
Same weakness: CWE-120

V. Comments for CVE-2023-6238

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