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CVE-2017-18193

20
FAUCET Score

CVE-2017-18193 describes a denial-of-service vulnerability in the Linux kernel's F2FS filesystem, specifically within the fs/f2fs/extent_cache.c component, affecting versions prior to 4.13. A local attacker can exploit this by running an application with multiple threads, leading to a system crash (BUG). The vulnerability has a CVSS v3 score of 5.5 (Medium), indicating low attack complexity and privileges required, with a high impact on availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 86th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-18193Low

kernel: Mishandled extent trees in fs/f2fs/extent_cache.c can allow a local user to cause a denial of service

Feb 22, 2018

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Patch
github.com / torvalds/linux/commit/dad48e73127ba10279ea33e6dbc8d3905c4d31c0
PatchVendor Advisory
usn.ubuntu.com / 3654-1
usn.ubuntu.com / 3654-2
usn.ubuntu.com / 3656-1
debian.org / security/2018/dsa-4188
securityfocus.com / bid/103147
Third Party AdvisoryVDB Entry