Exynos 980 Firmware: Double Free
CVE-2025-23102 is a high-severity double free vulnerability in Exynos 980 Firmware from Samsung, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.44% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Exynos 980 Firmware you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on semiconductor.samsung.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Samsung | Exynos 980 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 990 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 1080 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 2100 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 1280 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 2200 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 1380 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 1480 Firmware | Not specified in the record | Not stated |
| Samsung | Exynos 2400 Firmware | Not specified in the record | Not stated |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
An issue was discovered in Samsung Mobile Processor Exynos 980, 990, 1080, 2100, 1280, 2200, 1380, 1480 and 2400. A Double Free in the mobile processor leads to privilege escalation.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Double Free
The product calls free() twice on the same memory address.
How developers prevent this class of flaw
- Choose a language that provides automatic memory management.
- Ensure that each allocation is freed only once. After freeing a chunk, set the pointer to NULL to ensure the pointer cannot be freed again. In complicated error conditions, be sure that clean-up routines respect the state of allocation properly. If the language is object oriented, ensure that object destructors delete each chunk of memory only once.
- Use a static analysis tool to find double free instances.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Exynos 980 Firmware
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 7.0 High severity
- 7.5 High severity
- 7.0 High severity
Recent Double Free vulnerabilities
- 7.5 High severity
- 8.0 High severity
- 7.8 High severity
- 7.0 High severity
- 7.8 High severity
- 7.8 High severity
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