CVE-2013-1943
Publication date 16 July 2013
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
The KVM subsystem in the Linux kernel before 3.0 does not check whether kernel addresses are specified during allocation of memory slots for use in a guest's physical address space, which allows local users to gain privileges or obtain sensitive information from kernel memory via a crafted application, related to arch/x86/kvm/paging_tmpl.h and virt/kvm/kvm_main.c.
From the Ubuntu Security Team
Michael S. Tsirkin discovered a flaw in how the Linux kernel's KVM subsystem allocates memory slots for the guest's address space. A local user could exploit this flaw to gain system privileges or obtain sensitive information from kernel memory.
Status
Package | Ubuntu Release | Status |
---|---|---|
linux | 14.04 LTS trusty |
Not affected
|
linux-armadaxp | 14.04 LTS trusty | Not in release |
linux-ec2 | 14.04 LTS trusty | Not in release |
linux-flo | 14.04 LTS trusty | Not in release |
linux-fsl-imx51 | 14.04 LTS trusty | Not in release |
linux-goldfish | 14.04 LTS trusty | Not in release |
linux-grouper | 14.04 LTS trusty | Not in release |
linux-linaro-omap | 14.04 LTS trusty | Not in release |
linux-linaro-shared | 14.04 LTS trusty | Not in release |
linux-linaro-vexpress | 14.04 LTS trusty | Not in release |
linux-lts-backport-maverick | 14.04 LTS trusty | Not in release |
linux-lts-quantal | 14.04 LTS trusty | Not in release |
linux-lts-raring | 14.04 LTS trusty | Not in release |
linux-maguro | 14.04 LTS trusty | Not in release |
linux-mako | 14.04 LTS trusty | Not in release |
linux-manta | 14.04 LTS trusty | Not in release |
linux-mvl-dove | 14.04 LTS trusty | Not in release |
linux-qcm-msm | 14.04 LTS trusty | Not in release |
linux-ti-omap4 | 14.04 LTS trusty | Not in release |
Patch details
Package | Patch details |
---|---|
linux |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 · High |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-1940-1
- Linux kernel (EC2) vulnerabilities
- 6 September 2013
- USN-1939-1
- Linux kernel vulnerabilities
- 6 September 2013