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Ubuntu: USN-5643-1 (CVE-2022-2085): Ghostscript vulnerabilities

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Ubuntu: USN-5643-1 (CVE-2022-2085): Ghostscript vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
06/16/2022
Created
09/30/2022
Added
09/28/2022
Modified
09/28/2022

Description

A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.

Solution(s)

  • ubuntu-upgrade-ghostscript

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