CVE-2017-18249 Race condition in n/a

What is CVE-2017-18249?

CVE-2017-18249 is a high-severity vulnerability in Debian Debian Linux, published on 26 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.

Weakness: CWE-362

Which versions are affected by CVE-2017-18249?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2017-18249?

Upgrade to a fixed version.

Is CVE-2017-18249 being exploited?

There is no known exploitation of CVE-2017-18249 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 DEBIAN-CVE-2017-18249, GHSA-3g3f-97cc-fc4h, UBUNTU-CVE-2017-18249.