Vulnerability Monitor

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CVE-2011-1576

The Generic Receive Offload (GRO) implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5 and 2.6.32 on Red Hat Enterprise Linux 6, as used in Red Hat Enterprise Virtualization (RHEV) Hypervisor and other products, allows remote attackers to cause a denial of service via crafted VLAN packets that are processed by the napi_reuse_skb function, leading to (1) a memory leak or (2) memory corruption, a different vulnerability than CVE-2011-1478.

Security Impact Summary

CVE-2011-1576 is a security vulnerability that . Impacting 3 products from linux, from redhat, from redhat organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-08-31T23:55:01.737

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.7 (MEDIUM)

CVSSv2 Vector

AV:A/AC:M/Au:N/C:N/I:N/A:C

Access Vector: ADJACENT_NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

5.5

Impact Score

6.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	2.6.18	Yes
Operating System	redhat	enterprise_linux	5	Yes
Application	redhat	enterprise_virtualization_hypervisor	*	Yes
Operating System	redhat	enterprise_linux	6.0	Yes

References

http://rhn.redhat.com/errata/RHSA-2011-0927.html ([email protected])
http://www.redhat.com/support/errata/RHSA-2011-1090.html Vendor Advisory ([email protected])
http://www.redhat.com/support/errata/RHSA-2011-1106.html Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/48907 ([email protected])
http://www.securitytracker.com/id?1025853 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=695173 Patch ([email protected])
http://rhn.redhat.com/errata/RHSA-2011-0927.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2011-1090.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2011-1106.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/48907 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1025853 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=695173 Patch (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.