Vulnerability Details : CVE-2011-4112
The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.
Vulnerability category: Denial of service
Threat overview for CVE-2011-4112
Top countries where our scanners detected CVE-2011-4112
Top open port discovered on systems with this issue
49152
IPs affected by CVE-2011-4112 2,636
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2011-4112!
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Exploit prediction scoring system (EPSS) score for CVE-2011-4112
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2011-4112
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
References for CVE-2011-4112
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162
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http://www.openwall.com/lists/oss-security/2011/11/21/4
oss-security - CVE-2011-4112 kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0Mailing List;Patch;Third Party Advisory
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http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
Mailing List;Patch;Vendor Advisory
-
https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162
net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared · torvalds/linux@550fd08 · GitHubPatch;Third Party Advisory
-
http://downloads.avaya.com/css/P8/documents/100156038
ASA-2012-044 (WIND00319165 WIND00319166)Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=751006
751006 – (CVE-2011-4112) CVE-2011-4112 kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0Exploit;Issue Tracking;Patch;Third Party Advisory
Products affected by CVE-2011-4112
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:avaya:9608_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:avaya:9608g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:avaya:9611g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:avaya:9621g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:avaya:9641g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:avaya:9641gs_firmware:*:*:*:*:*:*:*:*