EUVD-2026-77142
GHSA-qwrw-gwq4-5cwr
Severity by source
AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L
Kernel crash warrants A:H not A:L; all other input metrics are consistent with a local race condition crossing into kernel scope.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
An issue was discovered in DPU Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600. A TOCTOU race condition in the Exynos DRM HDR Driver leads to a heap overflow, causing a kernel crash.
AnalysisAI
Heap overflow via TOCTOU race in the Exynos DRM HDR Driver affects Samsung Mobile Processors across nine Exynos SoC generations (1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600), enabling a local low-privileged attacker to crash the kernel. The race condition occurs in the Display Processing Unit's HDR handling path, where a check-then-use window can be exploited to corrupt kernel heap memory, resulting in a denial-of-service condition. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local code execution on the target device at low privilege (PR:L), meaning the attacker must have a running process on the affected Samsung handset - achieved via a malicious installed application or an existing foothold. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The assigned CVSS 2.8 base score with A:L (Low availability) appears to understate the real impact: the description explicitly describes a kernel crash, which canonically maps to A:H (High availability), not A:L - this discrepancy should be verified against the Samsung semiconductor advisory. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the firmware update published by Samsung via its semiconductor security advisory at https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2026-23786/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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