kernel: kvm: missing check in kvm_set_memory_region()
Published Jul 16, 2013
7.8
HIGHCVSS 3.1
EPSS 0.45%
Description
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.
Affected products
No data.
Configuration 1
- < 3.0
Configuration 2
- 5.0
- 6.2
- 6.3
Configuration 3
- 10.04
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-358.11.1.el6
Fixed · RHSA-2013:0911
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 5
kvm
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-358.11.1.el6 | Fixed | RHSA-2013:0911 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kvm | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise MRG 2. Future kvm updates for Red Hat Enterprise Linux 5 may address this flaw. This issue was addresses in Red Hat Enterprise Linux 6 via RHSA-2013:0911 (https://rhn.redhat.com/errata/RHSA-2013-0911.html). Please note that unlike Red Hat Enterprise Linux 6, where a local unprivileged user could use this flaw to escalate their privileges on the system, on Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6.2 EUS, and Red Hat Enterprise Linux 6.3 EUS the impact is limited to potential information leak only.
References (8)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e x_refsource_CONFIRM
- http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0 x_refsource_CONFIRMBroken Link
- http://www.ubuntu.com/usn/USN-1939-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2013-1943 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=950490 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2013-1943
- https://www.cve.org/CVERecord?id=CVE-2013-1943
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e | x_refsource_CONFIRM | |
| http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0 | x_refsource_CONFIRMBroken Link | |
| http://www.ubuntu.com/usn/USN-1939-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2013-1943 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=950490 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-1943 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-1943 |
Change history (0)
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