What is CVE-2011-1748?

CVE-2011-1748 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2011-1748 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-1748?

CVE-2011-1748 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-2011-1748?

No patch is currently available for CVE-2011-1748. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-1748 actively exploited?

CVE-2011-1748 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2011-1748

Medium

The raw_release function in net/can/raw.c in the Linux kernel before 2.6.39-rc6 does not properly validate a socket data structure, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted release operation.

Package Linux Kernel

Published 2011-05-09

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

Weakness type

CWE-476

CVE-2011-1748 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2011-1748 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Openwall
http://openwall.com/lists/oss-security/2011/04/20/7

Mailing List Third Party Advisory
Openwall
http://openwall.com/lists/oss-security/2011/04/21/1

Mailing List Third Party Advisory
Openwall
http://openwall.com/lists/oss-security/2011/04/21/2

Mailing List Third Party Advisory
Openwall
http://openwall.com/lists/oss-security/2011/04/21/7

Mailing List Third Party Advisory
Openwall
http://openwall.com/lists/oss-security/2011/04/22/2

Mailing List Third Party Advisory
Openwall
http://openwall.com/lists/oss-security/2011/04/25/4

Mailing List Third Party Advisory
Permalink
http://permalink.gmane.org/gmane.linux.network/192974

Broken Link
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.39-rc6

Broken Link
Securityfocus
http://www.securityfocus.com/bid/47835

Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=10022a6c66e199d8f61d9044543f38785713cbbd
Patch
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=698057
Patch

Details

CVE ID CVE-2011-1748

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2011-05-09

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-1748?

CVE-2011-1748 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2011-1748 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-1748?

CVE-2011-1748 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-2011-1748?

No patch is currently available for CVE-2011-1748. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-1748 actively exploited?

No — CVE-2011-1748 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →