4.7

CVE-2023-53047

tee: amdtee: fix race condition in amdtee_open_session

In the Linux kernel, the following vulnerability has been resolved:

tee: amdtee: fix race condition in amdtee_open_session

There is a potential race condition in amdtee_open_session that may
lead to use-after-free. For instance, in amdtee_open_session() after
sess->sess_mask is set, and before setting:

    sess->session_info[i] = session_info;

if amdtee_close_session() closes this same session, then 'sess' data
structure will be released, causing kernel panic when 'sess' is
accessed within amdtee_open_session().

The solution is to set the bit sess->sess_mask as the last step in
amdtee_open_session().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.6 < 5.10.177
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.105
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.22
Linux ≫ Linux Kernel Version >= 6.2 < 6.2.9
Linux ≫ Linux Kernel Version 6.3 Update rc1
Linux ≫ Linux Kernel Version 6.3 Update rc2
Linux ≫ Linux Kernel Version 6.3 Update rc3
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.038
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 4.7 1 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://git.kernel.org/stable/c/f632a90f8e39db39b322107b9a8d438b826a7f4f
Patch
https://git.kernel.org/stable/c/02b296978a2137d7128151c542e84dc96400bc00
Patch
https://git.kernel.org/stable/c/a63cce9393e4e7dbc5af82dc87e68cb321cb1a78
Patch
https://git.kernel.org/stable/c/b3ef9e6fe09f1a132af28c623edcf4d4f39d9f35
Patch
https://git.kernel.org/stable/c/f8502fba45bd30e1a6a354d9d898bc99d1a11e6d
Patch