CVE-2015-1822 Null dereference in n/a

What is CVE-2015-1822?

CVE-2015-1822 is a medium-severity vulnerability in Debian Debian Linux, published on 16 Apr 2015. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows remote authenticated users to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a large number of command requests.

Weakness: CWE-17

Which versions are affected by CVE-2015-1822?

It affects 2 products.

Products include Debian Debian Linux, Tuxfamily Chrony.

How do I fix CVE-2015-1822?

Upgrade to a fixed version.

Is CVE-2015-1822 being exploited?

There is no known exploitation of CVE-2015-1822 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-2015-1822, GHSA-rchf-p2rm-hg6h, UBUNTU-CVE-2015-1822.