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CVE-2011-1576

19
FAUCET Score

CVE-2011-1576 describes a denial-of-service vulnerability in the Generic Receive Offload (GRO) implementation of the Linux kernel, specifically affecting Red Hat Enterprise Linux 5 and 6, including RHEV Hypervisor. Remote attackers can exploit this by sending crafted VLAN packets, leading to a memory leak or memory corruption. With a CVSS score of 5.7, this vulnerability has an adjacent network attack vector and medium attack complexity, potentially resulting in a complete system availability loss. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.18:*:*:*:*:*:*:*
5CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:redhat:enterprise_virtualization_hypervisor:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.7MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
5.5
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
59.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 96th percentile among its peer group of 1,749 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-238.19.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-131.12.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.0 EUS - Server OnlyFixed in: kernel-0:2.6.32-71.34.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-0:2.6.33.9-rt31.75.el6rt
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 1Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2011-1576Moderate

kernel: net: Fix memory leak/corruption on VLAN GRO_DROP

Jun 6, 2011

References

rhn.redhat.com / errata/RHSA-2011-0927.html
bugzilla.redhat.com / show_bug.cgi
Patch
redhat.com / support/errata/RHSA-2011-1090.html
Vendor Advisory
redhat.com / support/errata/RHSA-2011-1106.html
Vendor Advisory
securityfocus.com / bid/48907
securitytracker.com / id