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Linux SO_PEERCRED / SO_PEERGROUPS Race Condition / Use-After-Free

Posted on 18 November 2021

Linux suffered from a use-after-free read vulnerability related to an SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()). This has been addressed in stable versions 5.14.10, 5.10.71, 5.4.151, 4.19.209, 4.14.249, 4.4.288, and 4.9.286.

 

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