Integer Overflow In is_in_region Allows User Thread To Access Kernel Memory
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. The impact would depend on the underlying system call and can range from denial of service to information leak to memory corruption resulting in code execution within the kernel. See NCC-ZEP-005 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.
Why it matters now
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 |
|---|---|---|---|---|---|
| zephyrproject | zephyr | 1.14.1 and later; 2.1.0 and later | — | No fix listed | CNA |
- zephyr Vendorzephyrproject Affected 1.14.1 and later; 2.1.0 and later Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:zephyrproject:zephyr:1.14.1:*:*:*:*:*:*:* | 1.14.1 | Vulnerable | zephyrproject |
| cpe:2.3:o:zephyrproject:zephyr:2.1.0:*:*:*:*:*:*:* | 2.1.0 | Vulnerable | zephyrproject |
- cpe:2.3:o:zephyrproject:zephyr:1.14.1:*:*:*:*:*:*:* Versions 1.14.1 Vulnerable ·zephyrproject
- cpe:2.3:o:zephyrproject:zephyr:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·zephyrproject
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
zephyrproject-rtos zephyr unspecified
11 records Highest priority Priority MEDIUM 1 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2020-08089 UpdateHub Module Copies a Variable-Size Hash String Into a Fixed-Size ArrayPriority MEDIUM 47
- TI-2020-08117 UpdateHub Might Dereference An Uninitialized PointerPriority LOW 38
- TI-2020-08087 Buffer Overflow in USB DFU requested lengthPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2020-10067
- 2026-10-03 Alias added: GHSA-2wjv-2phj-464p
References
Patch 3
More zephyrproject Zephyr vulnerabilities
- TI-2026-04422 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key CVSS 3.1CRITICAL 9.8
- TI-2026-01361 dns: memory‑safety issue in the DNS name parser CVSS 3.1CRITICAL 9.8
- TI-2026-09174 Unterminated URI buffer causes out-of-bounds read in LwM2M firmware pull (Package URI) CVSS 3.1CRITICAL 9.1
- TI-2026-09168 Stack buffer overflow in `net_ipaddr_parse()` IPv4 address-with-port parsing in `subsys/net/ip/utils.c` CVSS 3.1CRITICAL 9.8
- TI-2024-09625 net: lib: http_server: Buffer Under-read CVSS 3.1HIGH 8.6
- TI-2021-02863 Usb bluetooth device ACL read cb buffer overflow CVSS 3.1CRITICAL 9.6
Sources
- CVE-2020-10067 · CVE Program
- CVE-2020-10067 · NVD
- FIRST EPSS
- GHSA-2wjv-2phj-464p · GitHub Advisory Database · CC BY 4.0
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