CVE-2009-3640 json
The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc1 does not properly handle…
published 2009-10-29 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3615
- cvss
- 4.9
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
The update_cr8_intercept function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc1 does not properly handle the absence of an Advanced Programmable Interrupt Controller (APIC), which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly gain privileges via a call to the kvm_vcpu_ioctl function.
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
kernel.org
/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc1
vendor-advisory
- git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=88c808fd42b53a7e01a2ac3253ef31fef74cb5af
-
marc.info
/?l=oss-security&m=125626965020571&w=2
mailing-list
-
marc.info
/?l=oss-security&m=125640417219385&w=2
mailing-list
-
securityfocus.com
/bid/36805
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/53947
vdb-entry
Sources
- CVE List CVE-2009-3640
- NVD CVE-2009-3640
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