Arbitrary free in Dell ControlVault3 cv_close
CVE-2025-25215 is an arbitrary free vulnerability in the ControlVault firmware/API handling of Dell ControlVault3 prior to 5.15.10.14 and Dell ControlVault3 Plus prior to 6.2.26.36. The issue is in the cv_close functionality. Research cited in the provided content states that cv_open allocates a session object, writes the tag "SeSs" into it, and returns the heap pointer itself as the session handle to the host. Session validation only checks that the supplied pointer lies within the ControlVault heap and begins with the expected tag. Because of this weak validation, an attacker can forge a fake session handle that points to attacker-controlled heap data prepared via functions such as cv_create_object or cv_set_object, then invoke cv_close to free that forged object. This results in an arbitrary free / heap corruption condition in the ControlVault firmware.
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Recent activity
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One of the ReVault group of vulnerabilities affecting Dell ControlVault3 firmware and drivers.
A previously addressed ReVault family vulnerability impacting Dell ControlVault3, mentioned as part of Dell's firmware security history.
A heap corruption vulnerability in Dell ControlVault3 application firmware caused by trusting a host-supplied session pointer/handle, enabling forged sessions and freeing attacker-controlled heap memory.
An arbitrary free vulnerability in Dell/Broadcom ControlVault firmware, included in the ReVault set of flaws affecting Dell laptops.
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Cross-references every affected SKU, including bundled OEM variants.
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