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Fencer Intel
medium 6.9

CVE-2013-4343 json

Use-after-free vulnerability in drivers/net/tun.c in the Linux kernel through 3.11.1 allows local users to gain privileges by leveraging th…

published 13y ago modified 4mo ago also EUVD-2013-4229

cvss
6.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

Use-after-free vulnerability in drivers/net/tun.c in the Linux kernel through 3.11.1 allows local users to gain privileges by leveraging the CAP_NET_ADMIN capability and providing an invalid tuntap interface name in a TUNSETIFF ioctl call.

Patch / fix

  • linux linux_kernel 3.10.16, 3.11.5
  • linux Debian 14, Debian 13, Debian 12 3.11.5-1

debian advisories DEBIAN-CVE-2013-4343

  • kernel-rt enterprise mrg 2 3.8.13-rt14.25.el6rt
  • mrg-rt-release enterprise mrg 2 3.8.13-rt14.25.el6rt
  • kernel-rt-trace enterprise mrg 2 3.8.13-rt14.25.el6rt
  • kernel-rt-vanilla enterprise mrg 2 3.8.13-rt14.25.el6rt
  • kernel-rt-firmware enterprise mrg 2 3.8.13-rt14.25.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 3.8.13-rt14.25.el6rt

red hat advisories RHSA-2013:1490

  • kernel-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.180-4.31.1
  • kernel-syms-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.180-4.31.1
  • kernel-source-azure SLES for SAP 12 SP3, SLES 12 SP3 4.4.180-4.31.1

suse advisories SUSE-SU-2019:1527-1

Is CVE-2013-4343 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-4343 updated cvss 6.8

Kernel: net: use-after-free TUNSETIFF

  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.8.13-rt14.25.el6rt, mrg-rt-release 3.8.13-rt14.25.el6rt, kernel-rt-trace 3.8.13-rt14.25.el6rt, kernel-rt-vanilla 3.8.13-rt14.25.el6rt, kernel-rt-firmware 3.8.13-rt14.25.el6rt, kernel-rt-debuginfo-common-x86_64 3.8.13-rt14.25.el6rt
    fixed: vendor fix RHSA-2013:1490
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.