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Red Hat: CVE-2020-36557: race condition between the VT_DISALLOCATE ioctl and closing/opening of ttys, causing a use-after-free in con_shutdown(). (Multiple Advisories)

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Red Hat: CVE-2020-36557: race condition between the VT_DISALLOCATE ioctl and closing/opening of ttys, causing a use-after-free in con_shutdown(). (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/21/2022
Created
02/02/2023
Added
02/01/2023
Modified
03/13/2024

Description

A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

Solution(s)

  • redhat-upgrade-kernel

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