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WS-2021-0292
Good to know:
Date: May 31, 2021
Linux Kernel in versions v5.8 to before v5.10.38 the retire logic uses the 2 lower bits of the pointer to the retire function to store flags. However, the auto_retire function is not guaranteed to be aligned to a multiple of 4, which causes crashes as we jump to the wrong address.
Language: C
Severity Score
Severity Score
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400Top Fix
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | LOCAL |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | HIGH |
| Availability (A): | HIGH |