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CVE-2017-6353

21
FAUCET Score

CVE-2017-6353 is a denial-of-service vulnerability affecting the Linux kernel (through version 4.10.1) in the net/sctp/socket.c component. It stems from an improper fix for a previous vulnerability, allowing local users to trigger an invalid unlock and double free condition through multithreaded applications during specific SCTP association peel-off operations. Rated as Medium severity (CVSS 5.5), this vulnerability requires local access and low attack complexity, with the primary impact being high availability loss. There is no confidentiality or integrity impact. Currently, there is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, indicating a lack of widespread attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.10CPE 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
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
30.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 86th percentile among its peer group of 15,938 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-2017-6353Moderate

kernel: Possible double free in stcp_sendmsg() (incorrect fix for CVE-2017-5986)

Feb 23, 2017

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchThird Party Advisory
github.com / torvalds/linux/commit/dfcb9f4f99f1e9a49e43398a7bfbf56927544af1
PatchThird Party Advisory
debian.org / security/2017/dsa-3804
openwall.com / lists/oss-security/2017/02/27/2
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/96473