CVE-2023-2860 Out-of-bounds read when setting hmac data

What is CVE-2023-2860?

CVE-2023-2860 is a medium-severity vulnerability in Linux kernel, published on 24 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An out-of-bounds read vulnerability was found in the SR-IPv6 implementation in the Linux kernel. The flaw exists within the processing of seg6 attributes. The issue results from the improper validation of user-supplied data, which can result in a read past the end of an allocated buffer. This flaw allows a privileged local user to disclose sensitive information on affected installations of the Linux kernel.

Weakness: CWE-125

Which versions are affected by CVE-2023-2860?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-2860?

Apply the vendor's patch.

Is CVE-2023-2860 being exploited?

There is no known exploitation of CVE-2023-2860 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-27797, DEBIAN-CVE-2023-2860, GHSA-m5px-pcx9-8w6j, UBUNTU-CVE-2023-2860.