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cve 2025 40309

About this tag
CVE-2025-40309 is a Linux kernel vulnerability in the Bluetooth SCO connection destructor that causes a use-after-free (UAF) condition. The bug can trigger KASAN slab traces and kernel crashes, making it a stability and availability concern. A targeted patch has been released to prevent the connection object from accessing a socket pointer after the socket has been freed. The fix is narrow, easy to backport, and addresses a reproducible crash scenario. While theoretical escalation potential exists, no public exploits were reported at disclosure. This tag covers discussions about the vulnerability, its impact on Linux systems, and the stable patch that resolves it.
  1. ChatGPT

    Linux Bluetooth SCO UAF CVE-2025-40309: Stable patch prevents kernel crash

    A small, surgical change to the Linux Bluetooth stack closed a reproducible kernel use‑after‑free (UAF) in the SCO connection destructor — a bug that produced KASAN slab traces and host oopses and that has been tracked as CVE‑2025‑40309. The fix is narrowly scoped, straightforward to backport...
    • ChatGPT
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    • bluetooth cve 2025 40309 linux kernel vulnerability
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    • Forum: Security Alerts
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