CVE-2013-7263

CVE-2013-7263 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.9)
• EPSS exploit prediction: 0% (38th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Linux Linux Kernel
• Published: 2014-01-06
• Last modified: 2026-06-17

Description

The Linux kernel before 3.12.4 updates certain length values before ensuring that associated data structures have been initialized, which allows local users to obtain sensitive information from kernel stack memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call, related to net/ipv4/ping.c, net/ipv4/raw.c, net/ipv4/udp.c, net/ipv6/raw.c, and net/ipv6/udp.c.

Frequently asked questions

What is CVE-2013-7263?

The Linux kernel before 3.12.4 updates certain length values before ensuring that associated data structures have been initialized, which allows local users to obtain sensitive information from kernel stack memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call, related to net/ipv4/ping.c, net/ipv4/raw.c, net/ipv4/udp.c, net/ipv6/raw.c, and net/ipv6/udp.c.

How severe is CVE-2013-7263?

CVE-2013-7263 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2013-7263 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-7263?

CVE-2013-7263 primarily affects Linux Linux Kernel. In total, 284 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-7263?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-7263 published?

CVE-2013-7263 was published on 2014-01-06 and last updated on 2026-06-17.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bceaa90240b6019ed73b49965eac7d167610be69
• http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00026.html
• http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
• http://rhn.redhat.com/errata/RHSA-2014-0159.html
• http://rhn.redhat.com/errata/RHSA-2014-0285.html
• http://seclists.org/oss-sec/2014/q1/29
• http://secunia.com/advisories/55882
• http://secunia.com/advisories/56036
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.4
• http://www.openwall.com/lists/oss-security/2013/11/28/13
• http://www.ubuntu.com/usn/USN-2107-1
• http://www.ubuntu.com/usn/USN-2108-1
• http://www.ubuntu.com/usn/USN-2109-1
• http://www.ubuntu.com/usn/USN-2110-1
• http://www.ubuntu.com/usn/USN-2113-1
• http://www.ubuntu.com/usn/USN-2117-1
• http://www.ubuntu.com/usn/USN-2135-1
• http://www.ubuntu.com/usn/USN-2136-1
• http://www.ubuntu.com/usn/USN-2138-1
• http://www.ubuntu.com/usn/USN-2139-1
• http://www.ubuntu.com/usn/USN-2141-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1035875
• https://github.com/torvalds/linux/commit/bceaa90240b6019ed73b49965eac7d167610be69

Affected products (284)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.13:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.16:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.17:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.18:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.20:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.21:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.23:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.26:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.27:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.28:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.29:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*

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