CVE-2022-26495 Integer overflow in n/a

What is CVE-2022-26495?

CVE-2022-26495 is a critical 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 an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

Weakness: CWE-190

Which versions are affected by CVE-2022-26495?

It affects 3 products.

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

How do I fix CVE-2022-26495?

Upgrade to a fixed version.

Is CVE-2022-26495 being exploited?

There is no known exploitation of CVE-2022-26495 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• 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-2022-26495, DLA-2944-1, GHSA-q9rw-8758-hccj, UBUNTU-CVE-2022-26495, openSUSE-SU-2024:11993-1.