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CVE-2023-52577

5.5 · MEDIUM
Published Mar 2, 2024 linux CWE-908 EPSS 0.23% (14th pctl)

Overview

CVE-2023-52577 is a medium-severity vulnerability affecting linux linux_kernel. It was published on March 2, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

dccp: fix dccp_v4_err()/dccp_v6_err() again

dh->dccph_x is the 9th byte (offset 8) in "struct dccp_hdr",

not in the "byte 7" as Jann claimed.

We need to make sure the ICMP messages are big enough,

using more standard ways (no more assumptions).

syzbot reported:

BUG: KMSAN: uninit-value in pskb_may_pull_reason include/linux/skbuff.h:2667 [inline]

BUG: KMSAN: uninit-value in pskb_may_pull include/linux/skbuff.h:2681 [inline]

BUG: KMSAN: uninit-value in dccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94

pskb_may_pull_reason include/linux/skbuff.h:2667 [inline]

pskb_may_pull include/linux/skbuff.h:2681 [inline]

dccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94

icmpv6_notify+0x4c7/0x880 net/ipv6/icmp.c:867

icmpv6_rcv+0x19d5/0x30d0

ip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438

ip6_input_finish net/ipv6/ip6_input.c:483 [inline]

NF_HOOK include/linux/netfilter.h:304 [inline]

ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:4

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 5.10.195, < 5.10.198 Affected

Frequently Asked Questions

What is CVE-2023-52577?

CVE-2023-52577 is a medium-severity vulnerability affecting linux linux_kernel. It was published on March 2, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52577?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52577?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52577?

CyberStrike's AI-powered security agents can automatically detect CVE-2023-52577 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.