What’s Vulnerable › Vulnerabilities

CVE-2016-3707

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-06-27 · updated 2026-06-17
• Weakness: CWE-284

Description

The icmp_check_sysrq function in net/ipv4/icmp.c in the kernel.org projects/rt patches for the Linux kernel, as used in the kernel-rt package before 3.10.0-327.22.1 in Red Hat Enterprise Linux for Real Time 7 and other products, allows remote attackers to execute SysRq commands via crafted ICMP Echo Request packets, as demonstrated by a brute-force attack to discover a cookie, or an attack that occurs after reading the local icmp_echo_sysrq file.

Affected products

• Linux Kernel-Rt: through 3.10.0
• Novell Suse Linux Enterprise Real Time Extension: 12.0-sp1
• RedHat Enterprise Linux For Real Time: 7
• RedHat Enterprise Linux For Real Time For Nfv: 7

References

• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html
• http://www.openwall.com/lists/oss-security/2016/05/17/1
• https://access.redhat.com/errata/RHSA-2016:1301
• https://access.redhat.com/errata/RHSA-2016:1341
• https://bugzilla.redhat.com/show_bug.cgi?id=1327484
• http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html
• http://www.openwall.com/lists/oss-security/2016/05/17/1
• https://access.redhat.com/errata/RHSA-2016:1301

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