CVE-2013-1943
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Linux Kernel < 3.0
- Redhat Enterprise Linux 5.0
- Redhat Enterprise Linux Eus 6.2
- Redhat Enterprise Linux Eus 6.3
- Canonical Ubuntu Linux 10.04
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2013-1943.md and follow it. Check whether this project is affected by CVE-2013-1943. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://bugzilla.redhat.com/show_bug.cgi?id=950490
- https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e
- https://bugzilla.redhat.com/show_bug.cgi?id=950490
- https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e
- http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
- http://www.ubuntu.com/usn/USN-1939-1
- https://bugzilla.redhat.com/show_bug.cgi?id=950490
- https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e
- http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
- http://www.ubuntu.com/usn/USN-1939-1
- https://bugzilla.redhat.com/show_bug.cgi?id=950490
- https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e