CVE-2023-52503 (GCVE-0-2023-52503)
Vulnerability from cvelistv5
Published
2024-03-02 21:52
Modified
2026-05-11 19:28
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tee: amdtee: fix use-after-free vulnerability in amdtee_close_session There is a potential race condition in amdtee_close_session that may cause use-after-free in amdtee_open_session. For instance, if a session has refcount == 1, and one thread tries to free this session via: kref_put(&sess->refcount, destroy_session); the reference count will get decremented, and the next step would be to call destroy_session(). However, if in another thread, amdtee_open_session() is called before destroy_session() has completed execution, alloc_session() may return 'sess' that will be freed up later in destroy_session() leading to use-after-free in amdtee_open_session. To fix this issue, treat decrement of sess->refcount and removal of 'sess' from session list in destroy_session() as a critical section, so that it is executed atomically.
References
Impacted products
Vendor Product Version
Linux Linux Version: 757cc3e9ff1d72d014096399d6e2bf03974d9da1
Version: 757cc3e9ff1d72d014096399d6e2bf03974d9da1
Version: 757cc3e9ff1d72d014096399d6e2bf03974d9da1
Version: 757cc3e9ff1d72d014096399d6e2bf03974d9da1
Version: 757cc3e9ff1d72d014096399d6e2bf03974d9da1
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