CVE-2022-26496 Memory corruption in n/a

What is CVE-2022-26496?

CVE-2022-26496 is a critical memory corruption vulnerability in Debian Debian Linux, published on 6 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.

Weakness: CWE-787

Which versions are affected by CVE-2022-26496?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Network Block Device Project Network Block Device.

How do I fix CVE-2022-26496?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-26496 being exploited?

There is no known exploitation of CVE-2022-26496 in the wild and no public exploit code.

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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 DEBIAN-CVE-2022-26496, GHSA-mxm3-g2j6-276p, UBUNTU-CVE-2022-26496.