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CVE-2013-4348

25
FAUCET Score

CVE-2013-4348 describes a denial-of-service vulnerability in the Linux kernel, specifically within the skb_flow_dissect function, affecting versions through 3.12, including Canonical and Ubuntu Linux distributions. This flaw allows remote attackers to trigger an infinite loop by sending specially crafted packets with IPIP encapsulation and a small IHL field value. Rated with a CVSS score of 7.1, it has a network attack vector, medium attack complexity, and a high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.2, < 3.2.54CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.3, < 3.4.70CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.5, < 3.10.20CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.11, < 3.11.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 3.12, < 3.12.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
9.41%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0941 is in the 75th percentile among its peer group of 8,920 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:3.8.13-rt14.25.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2013-4348Important

kernel: net: deadloop path in skb_flow_dissect()

Oct 31, 2013

References

lists.opensuse.org / opensuse-security-announce/2014-02/msg00002.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2013-1490.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
git.kernel.org / cgit/linux/kernel/git/davem/net.git/commit
ExploitPatchVendor Advisory
ubuntu.com / usn/USN-2070-1
Third Party Advisory
ubuntu.com / usn/USN-2075-1
Third Party Advisory