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Date: March 26, 2021
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
Related Resources (5)
Upgrade to version v4.4.242, v4.9.242, v4.14.205, v4.19.156, v5.4.76, v5.9.7, v5.10-rc3
|Attack Vector (AV):||LOCAL|
|Attack Complexity (AC):||HIGH|
|Privileges Required (PR):||LOW|
|User Interaction (UI):||NONE|
|Access Vector (AV):||LOCAL|
|Access Complexity (AC):||MEDIUM|