The KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a…
Priority LOW 23CWE-399Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Partial Red Hat: 10 fixed, 1 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
The KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a denial of service (NULL pointer dereference and host OS crash) by making a KVM_CREATE_IRQCHIP ioctl call after a virtual CPU already exists.
Why it matters now
EPSS 0.00411 35th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 10 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 2 advisories
- RHSA-2012:0676 Released 2012-05-21 · Red Hat rating Moderatekvm security and bug fix update
- RHEL Desktop Multi OS (v. 5 client) kmod-kvm-83-249.el5_8.4, kmod-kvm-debug-83-249.el5_8.4, kvm-83-249.el5_8.4 +2
- RHEL Virtualization (v. 5 server) kmod-kvm-83-249.el5_8.4, kmod-kvm-debug-83-249.el5_8.4, kvm-83-249.el5_8.4 +2
- RHSA-2012:0571 Released 2012-05-15 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-220.17.1.el6, kernel-debug-2.6.32-220.17.1.el6, kernel-debug-devel-2.6.32-220.17.1.el6 +5
- Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-2.6.32-220.17.1.el6, python-perf-2.6.32-220.17.1.el6
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-220.17.1.el6, kernel-debug-2.6.32-220.17.1.el6, kernel-debug-devel-2.6.32-220.17.1.el6 +5
- Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-2.6.32-220.17.1.el6, python-perf-2.6.32-220.17.1.el6
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-220.17.1.el6, kernel-bootwrapper-2.6.32-220.17.1.el6, kernel-debug-2.6.32-220.17.1.el6 +8
- Red Hat Enterprise Linux Server Optional (v. 6) kernel-2.6.32-220.17.1.el6, python-perf-2.6.32-220.17.1.el6
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-220.17.1.el6, kernel-debug-2.6.32-220.17.1.el6, kernel-debug-devel-2.6.32-220.17.1.el6 +5
- Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-2.6.32-220.17.1.el6, python-perf-2.6.32-220.17.1.el6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix yet |
| RHEL Desktop Multi OS (v. 5 client) | Fixed | RHSA-2012:0676 |
| RHEL Virtualization (v. 5 server) | Fixed | RHSA-2012:0676 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2012:0571 |
Not affected: 1 product
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2012-1601
- 2026-10-03 Alias added: GHSA-p5fv-h55x-j3mr
References
Other 4
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2012-1601 · CVE Program
- CVE-2012-1601 · NVD
- FIRST EPSS
- GHSA-p5fv-h55x-j3mr · GitHub Advisory Database · CC BY 4.0
- CVE-2012-1601 · Red Hat security data · CC BY 4.0
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