The bad_mode function in arch/arm64/kernel/traps.c in the Linux kernel before 3.9.5 on…
Priority LOW 23Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The bad_mode function in arch/arm64/kernel/traps.c in the Linux kernel before 3.9.5 on the ARM64 platform allows local users to cause a denial of service (system crash) via vectors involving an attempted register access that triggers an unexpected value in the Exception Syndrome Register (ESR).
Why it matters now
EPSS 0.00495 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:arm64:* | up to 3.9.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9.0:*:*:*:*:*:arm64:* | 3.9.0 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9.1:*:*:*:*:*:arm64:* | 3.9.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9.2:*:*:*:*:*:arm64:* | 3.9.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:3.9.3:*:*:*:*:*:arm64:* | 3.9.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:arm64:* Versions up to 3.9.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9.0:*:*:*:*:*:arm64:* Versions 3.9.0 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9.1:*:*:*:*:*:arm64:* Versions 3.9.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9.2:*:*:*:*:*:arm64:* Versions 3.9.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:3.9.3:*:*:*:*:*:arm64:* Versions 3.9.3 Vulnerable ·Linux
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2013-4220
- 2026-10-03 Alias added: GHSA-4wjm-w232-9fqf
References
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-2013-4220 · CVE Program
- CVE-2013-4220 · NVD
- FIRST EPSS
- GHSA-4wjm-w232-9fqf · GitHub Advisory Database · CC BY 4.0
- CVE-2013-4220 · 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