Vulnerability Details : CVE-2012-1146
The mem_cgroup_usage_unregister_event function in mm/memcontrol.c in the Linux kernel before 3.2.10 does not properly handle multiple events that are attached to the same eventfd, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by registering memory threshold events.
Vulnerability category: Memory CorruptionDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2012-1146
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 8 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2012-1146
| 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 |
CWE ids for CVE-2012-1146
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A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-1146
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https://exchange.xforce.ibmcloud.com/vulnerabilities/73711
Linux Kernel memcg denial of service undefined Vulnerability ReportThird Party Advisory;VDB Entry
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http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
[security-announce] SUSE-SU-2012:0554-1: important: Security update forMailing List;Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=800813
800813 – (CVE-2012-1146) CVE-2012-1146 kernel: mm: memcg: unregistring of events attached to the same eventfd can lead to oopsExploit;Issue Tracking;Patch;Third Party Advisory
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http://lists.fedoraproject.org/pipermail/package-announce/2012-March/075781.html
[SECURITY] Fedora 16 Update: kernel-3.2.10-3.fc16Mailing List;Third Party Advisory
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http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10
Mailing List;Patch;Vendor Advisory
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https://github.com/torvalds/linux/commit/371528caec553785c37f73fa3926ea0de84f986f
mm: memcg: Correct unregistring of events attached to the same eventfd · torvalds/linux@371528c · GitHubExploit;Patch;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2012/03/07/3
oss-security - Re: CVE request -- kernel: mm: memcg: unregistring of events attached to the same eventfd can lead to oopsExploit;Mailing List;Patch;Third Party Advisory
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=371528caec553785c37f73fa3926ea0de84f986f
Products affected by CVE-2012-1146
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_desktop:11:sp2:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:*:vmware:*:*
- cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:-:*:*:*
- cpe:2.3:o:suse:linux_enterprise_high_availability_extension:11:sp2:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:*