PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-23787 Samsung CVE debrief

A Use-After-Free issue in the Exynos DRM HDR driver of Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600 leads to a kernel crash. This issue is rated as MEDIUM with a CVSS score of 4.2. The issue was discovered in DPU and is related to improper cleanup upon vmap failure. Defenders responsible for Samsung Mobile Processor Exynos systems should assess exposure to this vulnerability and prioritize verification of affected versions. The vulnerability has a CVSS score of 4.2 and is considered MEDIUM severity. The Exynos DRM HDR driver is vulnerable to a Use-After-Free issue due to improper cleanup upon vmap failure, leading to a kernel crash in the

Vendor
Samsung
Product
Exynos 1280 firmware
CVSS
MEDIUM 4.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-14
Original CVE updated
2026-09-22
Advisory published
2026-09-14
Advisory updated
2026-09-22

Who should care

Defenders responsible for Samsung Mobile Processor Exynos systems should assess exposure to this vulnerability and prioritize verification of affected versions.

Why it matters

CVE-2026-23787 is a Use-After-Free issue in the Exynos DRM HDR driver that leads to a kernel crash. Defenders should prioritize verifying affected versions and assessing exposure in their systems.

  • Verification of affected Samsung Mobile Processor Exynos versions is required
  • Assessment of exposure in systems using Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600 is necessary
  • Potential kernel crashes may occur if the vulnerability is exploited

Technical summary

The Exynos DRM HDR driver is vulnerable to a Use-After-Free issue due to improper cleanup upon vmap failure, leading to a kernel crash in Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600. The issue was discovered in DPU and has a CVSS score of 4.2. The vulnerability is considered MEDIUM severity and requires verification of affected versions and assessment of exposure in systems using these processors.

Defensive priority

Defenders should prioritize verifying the affected versions of Samsung Mobile Processor Exynos and assessing exposure in their systems.

Recommended defensive actions

  • Verify the affected versions of Samsung Mobile Processor Exynos in your systems
  • Assess exposure to this vulnerability
  • Monitor for any potential kernel crashes

Evidence notes

The issue was discovered in DPU and is related to improper cleanup upon vmap failure in the Exynos DRM HDR driver. The vulnerability leads to a kernel crash and has a CVSS score of 4.2. The issue is considered MEDIUM severity and affects Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600. The source confidence is limited, and defenders should verify affected versions and assess exposure in their systems.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-23787 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-23787

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-23787 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-23787

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.