What’s Vulnerable › Vulnerabilities

CVE-2017-18200

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-26 · updated 2026-06-17
• Weakness: CWE-20

Description

The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.

Affected products

• Linux kernel: through 4.13

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=638164a2718f337ea224b747cf5977ef143166a4
• https://github.com/torvalds/linux/commit/638164a2718f337ea224b747cf5977ef143166a4
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=638164a2718f337ea224b747cf5977ef143166a4
• https://github.com/torvalds/linux/commit/638164a2718f337ea224b747cf5977ef143166a4

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