CVE-2020-36557: 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.

PriorityP420medium5.1CVSS 3.1

AVLACHPRNUINSUCNINAH

EPSS

0.20%

10.2th percentile

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 5.5.17-1 (bookworm)	linux 5.5.17-1 (bookworm)
linux	linux_kernel	< 5.6.2	5.6.2
linux	linux_kernel	>= 0 < 5.5.17-1	5.5.17-1
linux	linux_kernel	>= 0 < 5.5.17-1	5.5.17-1
linux	linux_kernel	>= 0 < 5.5.17-1	5.5.17-1
linux	linux_kernel	>= 0 < 5.5.17-1	5.5.17-1

CVSS provenance

nvdv3.15.1MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

osv5.1MEDIUM

vendor_debian5.1MEDIUM

vendor_redhat5.1MEDIUM

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