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CVE-2023-42755— Kernel: rsvp: out-of-bounds read in rsvp_classify()

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rsvp_classify() 中存在野指针访问，导致越界访问。

CVSS 6.5 · Medium EPSS 0.40% · P31
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I. Basic Information for CVE-2023-42755

Vulnerability Information
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Vulnerability Title
Kernel: rsvp: out-of-bounds read in rsvp_classify()
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 缓冲区错误漏洞
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rsvp_classify() 中存在野指针访问，导致越界访问。
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
Red Hat Red Hat Enterprise Linux 8 0:4.18.0-553.rt7.342.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat Red Hat Enterprise Linux 8 0:4.18.0-553.el8_10 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
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 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2023-42755

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III. Intelligence Information for CVE-2023-42755

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Vendor Advisories for CVE-2023-42755 (4)

Mailing List Discussions for CVE-2023-42755 (3)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2023-42755

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