CVE-2021-25394 on CISA KEV

A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.

01What CISA says about this vulnerability

A use after free vulnerability via race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows arbitrary write given a radio privilege is compromised.

02Required action — verbatim from CISA

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable

03Notes & references

• security.samsungmobile.com — https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=5

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Samsung Mobile	Samsung Mobile Devices	O(8.x), P(9.0), Q(10.0), R(11.0)

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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