Debian: CVE-2022-48908: linux -- security update

Debian: CVE-2022-48908: linux -- security update

Severity

5

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

08/22/2024

Created

08/24/2024

Added

08/23/2024

Modified

01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com20020pci_id_table' reveals that this field is empty for some devices, which will cause null pointer dereference when initializing these devices. The following log reveals it: [3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] [3.975181] Call Trace: [3.976208]local_pci_probe+0x13f/0x210 [3.977248]pci_device_probe+0x34c/0x6d0 [3.977255]? pci_uevent+0x470/0x470 [3.978265]really_probe+0x24c/0x8d0 [3.978273]__driver_probe_device+0x1b3/0x280 [3.979288]driver_probe_device+0x50/0x370 Fix this by checking whether the 'ci' is a null pointer first.

Solution(s)

• debian-upgrade-linux

References

• https://attackerkb.com/topics/cve-2022-48908
• CVE - 2022-48908