In multiple functions of af_vsock.c, there is a possible way to cause a use after free due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-21756US | — | Exploit | ||
In the Linux kernel, the following vulnerability has been resolved:
vsock: Keep the binding until socket destruction
Preserve sockets bindings; this includes both resulting from… | ||||
02
references
External citations — patches, advisories, analysis.
- https://android.googlesource.com/kernel/common/+/50854473806ad532c32bdf23327823b860670849FIX
- https://android.googlesource.com/kernel/common/+/537268adf4cdb2b5ec905c01ffa919a71556ffa8FIX
- https://android.googlesource.com/kernel/common/+/7f11cc02d9eeec5c0eca76ddfa5f5f1c3c6688f2FIX
- https://android.googlesource.com/kernel/common/+/9241eb16e35eb5fb700caf060ff0efb0e0a0fcd7FIX
- https://android.googlesource.com/kernel/common/+/cd0ebcd1757913ed6232b90203f586cd4b59de42FIX
- https://android.googlesource.com/kernel/common/+/e2647b0fb4204838e32275f85859b029dc9f36b4FIX
- https://source.android.com/security/bulletin/2025-09-01ADVISORY
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