What’s Vulnerable › Vulnerabilities

CVE-2016-3135

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-04-27 · updated 2026-06-17
• Weakness: CWE-189

Description

Integer overflow in the xt_alloc_table_info function in net/netfilter/x_tables.c in the Linux kernel through 4.5.2 on 32-bit platforms allows local users to gain privileges or cause a denial of service (heap memory corruption) via an IPT_SO_SET_REPLACE setsockopt call.

Affected products

• Canonical Ubuntu Linux: 14.04, 15.10, 16.04
• Linux kernel: from 4.2 before 4.4.21; from 4.5 before 4.6 — fixed in 4.4.21, 4.6

How to fix

Upgrade to a fixed version: Linux kernel 4.4.21, 4.6. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d157bd761585605b7882935ffb86286919f62ea1
• http://www.securityfocus.com/bid/84305
• http://www.ubuntu.com/usn/USN-2930-1
• http://www.ubuntu.com/usn/USN-2930-2
• http://www.ubuntu.com/usn/USN-2930-3
• http://www.ubuntu.com/usn/USN-3054-1
• http://www.ubuntu.com/usn/USN-3055-1
• http://www.ubuntu.com/usn/USN-3056-1
• http://www.ubuntu.com/usn/USN-3057-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1317386
• https://code.google.com/p/google-security-research/issues/detail?id=758
• https://github.com/torvalds/linux/commit/d157bd761585605b7882935ffb86286919f62ea1

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