CVE-2023-0494
High
Description
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
SeverityHigh
CVSS7.8
Exploit probability—
Product
X.org X Server
PublishedMar 27, 2023
First seenMar 27, 2023
Weakness typeCWE-416Use after free
How to fix
Update
- x.org x_server21.1.7 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| x.org x_server | v < 21.1.7 | 21.1.7 |
| fedoraproject fedora | 36, 37 | — |
| redhat enterprise_linux | 8.0, 8.1, 9.0 | — |
| redhat enterprise_linux_aus | 8.4, 8.6 | — |
| redhat enterprise_linux_desktop | 7.0 | — |
| redhat enterprise_linux_eus | 8.4, 8.6, 9.0 | — |
| redhat enterprise_linux_for_ibm_z_systems | 7.0, 8.0 | — |
| redhat enterprise_linux_for_ibm_z_systems_eus | 8.4, 8.6 | — |
| redhat enterprise_linux_for_power_big_endian | 7.0 | — |
| redhat enterprise_linux_for_power_little_endian | 7.0, 8.0, 9.0 | — |
| redhat enterprise_linux_for_power_little_endian_eus | 8.4, 8.6 | — |
| redhat enterprise_linux_for_scientific_computing | 7.0 | — |
| redhat enterprise_linux_server | 7.0 | — |
| redhat enterprise_linux_server_aus | 8.2 | — |
| redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1, 8.2, 8.4, 8.6, 9.0 | — |
| redhat enterprise_linux_server_tus | 8.2, 8.4, 8.6 | — |
| redhat enterprise_linux_server_update_services_for_sap_solutions | 8.2 | — |
| redhat enterprise_linux_server_workstation | 7.0 | — |
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