CVE-2017-18257 Integer overflow in n/a

What is CVE-2017-18257?

CVE-2017-18257 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl.

Weakness: CWE-190

Which versions are affected by CVE-2017-18257?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2017-18257?

Upgrade to a fixed version.

Is CVE-2017-18257 being exploited?

There is no known exploitation of CVE-2017-18257 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-2017-18257, GHSA-2q7q-p2pj-49m2, UBUNTU-CVE-2017-18257.