null pointer deference in GNU Midnight at /tty/x11conn.c

[Meng Ruijie <ruijie_meng () u nus edu>]

[Vulnerability description]
GNU Midnight Commander v4.8.29-146-g299d9a2fb was discovered to contain a segmentation violation via the function 
x_error_handler() at /tty/x11conn.c.

[VulnerabilityType Other]
null pointer deference

[Vendor of Product]
GNU

[Affected Product Code Base]
Midnight Commander - 4.8.29-146-g299d9a2fb

[Reference]
https://midnight-commander.org/ticket/4484

[CVE Reference]
The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2023-45925 to this 
vulnerability.
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