CVE-2011-4112: Null Pointer Dereference
First published: Tue Jul 26 2011(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <3.1 | |
| Avaya 9608 Firmware | >=6.0<=6.6.0 | |
| Avaya 9608 | ||
| Avaya 9608g Firmware | >=6.0<=6.6.0 | |
| Avaya 9608g | ||
| Avaya 9611g Firmware | >=6.0<=6.6.0 | |
| Avaya 9611g | ||
| Avaya 9621g Firmware | >=6.0<=6.6.0 | |
| Avaya 9621g | ||
| Avaya 9641g Firmware | >=6.0<=6.6.0 | |
| Avaya 9641g | ||
| Avaya 9641gs Firmware | >=6.0<=6.6.0 | |
| Avaya 9641gs |
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Reference Links
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
- https://bugzilla.redhat.com/show_bug.cgi?id=751006
- http://www.openwall.com/lists/oss-security/2011/11/21/4
- https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162
- http://downloads.avaya.com/css/P8/documents/100156038
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162
- https://www.cve.org/CVERecord?id=CVE-2011-4112 https://nvd.nist.gov/vuln/detail/CVE-2011-4112
- https://access.redhat.com/security/cve/CVE-2011-4112
- http://git.kernel.org/linus/550fd08c2cebad61c548def135f67aba284c6162
- http://git.kernel.org/linus/d8873315065f1f527c7c380402cf59b1e1d0ae36
- http://www.openwall.com/lists/oss-security/2011/11/24/3
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- canonical/avaya 9608 firmware
- version/avaya 9608 firmware/6.0
- version/avaya 9608 firmware/6.6.0
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- canonical/avaya 9608g firmware
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- version/avaya 9608g firmware/6.6.0
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- canonical/avaya 9611g firmware
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- version/avaya 9611g firmware/6.6.0
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- version/avaya 9621g firmware/6.0
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- canonical/avaya 9641g firmware
- version/avaya 9641g firmware/6.0
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- version/avaya 9641gs firmware/6.0
- version/avaya 9641gs firmware/6.6.0
- canonical/avaya 9641gs