Medium · published June 11, 2021
CVSS calls it medium at 6.4. It is confirmed in active exploitation. It sits in the 33.2th percentile for exploit probability.
⚠️ A race condition in the MFC charger driver can turn a tiny oversight into a ticket for an arbitrary write — if radio privileges are compromised, the consequences can be significant! Think of it like a delivery service where two drivers are trying to grab the same package at the same time; if one slips in just before the other, they could end up taking home something valuable without proper clearance. An attacker could execute arbitrary write operations, potentially modifying critical system files. This could lead to unauthorized changes in device behavior, causing system instability or even allowing further exploits to take place.
Think of it like a delivery service where two drivers are trying to grab the same package at the same time; if one slips in just before the other, they could end up taking home something valuable without proper clearance. CVE-2021-25394 is a use-after-free vulnerability that arises from a race condition in the MFC charger driver, allowing arbitrary memory writes if an attacker has compromised radio privileges.
An attacker could execute arbitrary write operations, potentially modifying critical system files. This could lead to unauthorized changes in device behavior, causing system instability or even allowing further exploits to take place. To mitigate this vulnerability, ensure your system is updated to the latest SMR MAY-2021 Release 1 or later. Additionally, conduct a review of radio privilege settings and limit access as needed to safeguard against potential exploitation. You've got this! Stay proactive and secure your systems! 🛡️