CVE-2026-23789 Samsung Exynos - Use After Free

Samsung Mobile Processor and Wearable Processor Exynos series contain a double-free vulnerability caused by improper cleanup of dma_buf references in the Exynos MFC encoder driver, letting attackers cause kernel memory corruption and potentially execute arbitrary code, exploit requires kernel-level access.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.11% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-415

Vendor fix

Update to the latest firmware or kernel version provided by Samsung that addresses this issue.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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