CVE-2013-7271

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-01-06 · updated 2026-06-17
Weakness: CWE-20

Description

The x25_recvmsg function in net/x25/af_x25.c in the Linux kernel before 3.12.4 updates a certain length value without ensuring that an associated data structure has been initialized, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call.

Affected products

Linux kernel: through 3.12.3; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+277)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
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/2013/12/31/7
http://www.securityfocus.com/bid/64746
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-2128-1
http://www.ubuntu.com/usn/USN-2129-1

Get alerted when CVE-2013-7271 or the next vulnerability affects your stack