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CVE-2023-0458— Spectre V1 Gadget in do_prlimit in the Linux Kernel

Quick assessment

Affected
Linux Linux 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，该漏洞源于存在推测性指针取消引用，资源参数值受到控制，攻击者利用该漏洞可以泄漏内容。

CVSS 5.3 · Medium EPSS 0.72% · P52

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2023-0458

Vulnerability Information
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Vulnerability Title
Spectre V1 Gadget in do_prlimit in the Linux Kernel
Source: CVE Program / CVE List V5
Vulnerability Description
A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 代码问题漏洞
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，该漏洞源于存在推测性指针取消引用，资源参数值受到控制，攻击者利用该漏洞可以泄漏内容。
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
Linux Linux Kernel 0 ~ 6.1.8 -

II. Public POCs for CVE-2023-0458

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III. Intelligence Information for CVE-2023-0458

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Patches & Fixes for CVE-2023-0458 (1)

Mailing List Discussions for CVE-2023-0458 (2)

Other References for CVE-2023-0458 (1)

IV. Related Vulnerabilities

Same product: Linux Kernel
Same vendor: Linux
Same weakness: CWE-476

V. Comments for CVE-2023-0458

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