What’s Vulnerable › Vulnerabilities

CVE-2016-4580

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-05-23 · updated 2026-06-17
• Weakness: CWE-200

Description

The x25_negotiate_facilities function in net/x25/x25_facilities.c in the Linux kernel before 4.5.5 does not properly initialize a certain data structure, which allows attackers to obtain sensitive information from kernel stack memory via an X.25 Call Request.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 15.10, 16.04
• Linux kernel: through 4.5.4

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=79e48650320e6fba48369fccf13fd045315b19b8
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html
• http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html
• http://www.debian.org/security/2016/dsa-3607
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5
• http://www.openwall.com/lists/oss-security/2016/05/10/12
• http://www.securityfocus.com/bid/90528
• http://www.ubuntu.com/usn/USN-3016-1
• http://www.ubuntu.com/usn/USN-3016-2
• http://www.ubuntu.com/usn/USN-3016-3
• http://www.ubuntu.com/usn/USN-3016-4

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