Null Pointer Dereference in com20020pci_probe() in net: arcnet: com20020
Summary
GSD-2022-1000767: net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe(). Affects Kernel versions >= 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f, < ea372aab54903310756217d81610901a8e66cb7d. No fix is published. How to fix ↓
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Background
The com20020 driver is a network driver for the ARCnet protocol. ARCnet is a local area network (LAN) protocol that was popular in the 1980s and early 1990s. The com20020 driver provides support for the COM20020 chipset, which is commonly used in ARCnet network cards. This vulnerability affects the com20020 driver in the Linux Kernel.
Vulnerability Detail
The vulnerability is a null pointer dereference in the com20020pci_probe() function of the com20020 driver. This function is responsible for probing and initializing the com20020 chipset when it is connected via a PCI bus. The vulnerability occurs when the function dereferences a null pointer, leading to a kernel crash or potential privilege escalation. The impact and attack plausibility of this vulnerability have not yet been proven.
How To Fix
No fixed version is published for this vulnerability.
The vulnerability has been fixed in Linux Kernel version v5.15.27 by commit ea372aab54903310756217d81610901a8e66cb7d. To fix the vulnerability, users should update their Linux Kernel to version v5.15.27 or later.
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Workaround
There is no known workaround for this vulnerability. Updating the Linux Kernel to the fixed version is the recommended solution.
Conclusion
The null pointer dereference vulnerability in the com20020pci_probe() function of the com20020 driver in the Linux Kernel has been fixed in version v5.15.27. Users are advised to update their Linux Kernel to this version or later to mitigate the vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The com20020 driver is a network driver for the ARCnet protocol, commonly used in ARCnet network cards.
A null pointer dereference occurs when a program attempts to access or dereference a memory location that has a null (empty) value.
Privilege escalation is the act of exploiting a vulnerability to gain higher privileges or access rights than originally intended.
The impact of this vulnerability could range from a kernel crash to potential privilege escalation, depending on the attacker's capabilities.
To fix this vulnerability, update your Linux Kernel to version v5.15.27 or later.
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