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CVE-2011-1023

17
FAUCET Score

CVE-2011-1023 describes a denial-of-service vulnerability in the Reliable Datagram Sockets (RDS) subsystem of the Linux kernel prior to version 2.6.38. This flaw allows local users to trigger a system crash (BUG_ON) through improper handling of congestion map updates during loopback or InfiniBand transmit operations. With a CVSS score of 4.9, it is considered a medium-severity vulnerability, requiring local access with low attack complexity to achieve a complete denial of service. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.37.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.37CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.37:*:*:*:*:*:*:*
2.6.37CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.37:rc1:*:*:*:*:*:*
2.6.37CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.37:rc2:*:*:*:*:*:*
2.6.37CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.37:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
39.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 74th percentile among its peer group of 3,050 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-131.0.15.el6
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 1Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2011-1023Moderate

kernel: BUG_ON() in rds_send_xmit()

Mar 2, 2011

References

ftp.osuosl.org / pub/linux/kernel/v2.6/ChangeLog-2.6.38
git.kernel.org
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/6094628bfd94323fc1cea05ec2c6affd98c18f7f
ExploitPatch
openwall.com / lists/oss-security/2011/03/03/2