arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values…
Priority LOW 30CWE-369Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-369.
Summary
arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.
Why it matters now
EPSS 0.00563 47th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
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
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 4.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:-:*:*:*:*:*:* | 4.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:* | 4.4 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:* | 4.4 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:rc3:*:*:*:*:*:* | 4.4 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:rc4:*:*:*:*:*:* | 4.4 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:rc5:*:*:*:*:*:* | 4.4 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.4:rc6:*:*:*:*:*:* | 4.4 rc6 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:-:*:*:*:*:*:* Versions 4.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:rc1:*:*:*:*:*:* Versions 4.4 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:rc2:*:*:*:*:*:* Versions 4.4 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:rc3:*:*:*:*:*:* Versions 4.4 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:rc4:*:*:*:*:*:* Versions 4.4 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:rc5:*:*:*:*:*:* Versions 4.4 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.4:rc6:*:*:*:*:*:* Versions 4.4 rc6 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | 22 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* | 12.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* | 15.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* | 15.10 | Vulnerable | Canonical |
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* Versions 12.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* Versions 15.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 7
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2015-7513
- 2026-10-03 Alias added: GHSA-p484-vchg-ff48
References
Patch 4
- [oss-security] 20160107 CVE-2015-7513 Kernel: kvm: divide by zero issue leads to DoS
- https://github.com/torvalds/linux/commit/0185604c2d82c560dab2f2933a18f797e74ab5a8
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0185604c2d82c560dab2f2933a18f797e74ab5a8
- https://bugzilla.redhat.com/show_bug.cgi?id=1284847
Sources
- CVE-2015-7513 · CVE Program
- CVE-2015-7513 · NVD
- FIRST EPSS
- GHSA-p484-vchg-ff48 · GitHub Advisory Database · CC BY 4.0
- CVE-2015-7513 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences