What is CVE-2011-1023?

CVE-2011-1023 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10. CVE-2011-1023 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-1023?

CVE-2011-1023 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2011-1023?

No patch is currently available for CVE-2011-1023. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-1023 actively exploited?

CVE-2011-1023 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2011-1023

Medium

The Reliable Datagram Sockets (RDS) subsystem in the Linux kernel before 2.6.38 does not properly handle congestion map updates, which allows local users to cause a denial of service (BUG_ON and system crash) via vectors involving (1) a loopback (aka loop) transmit operation or (2) an InfiniBand (aka ib) transmit operation.

Package Linux Kernel

Published 2012-06-21

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

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

References

The following references provide additional information about CVE-2011-1023 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Ftp
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38
Openwall
http://www.openwall.com/lists/oss-security/2011/03/03/2
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=680345
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6094628bfd94323fc1cea05ec2c6affd98c18f7f
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/6094628bfd94323fc1cea05ec2c6affd98c18f7f
Patch

Details

CVE ID CVE-2011-1023

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2012-06-21

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-1023?

CVE-2011-1023 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 . CVE-2011-1023 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-1023?

CVE-2011-1023 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2011-1023?

No patch is currently available for CVE-2011-1023. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-1023 actively exploited?

No — CVE-2011-1023 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.