CVE-2023-3268 Information disclosure in kernel

What is CVE-2023-3268?

CVE-2023-3268 is a high-severity vulnerability in Debian Debian Linux, published on 16 Jun 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 (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.

Weakness: CWE-125

Which versions are affected by CVE-2023-3268?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2023-3268?

Apply the vendor's patch.

Is CVE-2023-3268 being exploited?

There is no known exploitation of CVE-2023-3268 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

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• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as AZL-27248, CVE-2023-39977, DEBIAN-CVE-2023-3268, GHSA-r2p2-3cx2-xc3r, UBUNTU-CVE-2023-3268.