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CVE-2017-6346

24
FAUCET Score

CVE-2017-6346 describes a race condition in the Linux kernel's af_packet.c module, affecting versions prior to 4.9.13. This vulnerability allows a local attacker to trigger a use-after-free condition, potentially leading to a denial of service or other unspecified impacts, by using a multithreaded application that makes PACKET_FANOUT setsockopt system calls. Rated 7.0 HIGH on the CVSS scale, it requires local access and high attack complexity, but could result in high confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.1, < 3.2.87CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.3, < 3.10.106CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.11, < 3.12.71CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.13, < 3.16.42CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.17, < 4.1.49CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
21.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 56th percentile among its peer group of 1,525 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 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-2017-6346Moderate

kernel: net: Race condition in net/packet/af_packet.c

Feb 14, 2017

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
github.com / torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b
PatchVendor Advisory
source.android.com / security/bulletin/2017-09-01
Third Party Advisory
debian.org / security/2017/dsa-3804
Third Party Advisory
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.9.13
PatchRelease NotesVendor Advisory
openwall.com / lists/oss-security/2017/02/28/6
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/96508
Third Party AdvisoryVDB Entry