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.
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 10 Dec 2024 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:* |
|
| Vendors & Products |
Linux
Linux linux Kernel |
|
| Metrics |
cvssV3_1
|
cvssV3_1
|
Mon, 04 Nov 2024 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-05-04T07:38:08.762Z
Reserved: 2024-02-20T12:30:33.313Z
Link: CVE-2023-52503
Updated: 2024-08-02T23:03:20.580Z
Status : Analyzed
Published: 2024-03-02T22:15:47.250
Modified: 2024-12-10T21:26:43.377
Link: CVE-2023-52503
OpenCVE Enrichment
No data.