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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Aug 23, 2024 | Aug 22, 2024 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-azure-4.15Upgrade linux-oracleUpgrade linux-intel-iotg-5.15Upgrade linux-gcp-4.15Upgrade linux-fipsUpgrade linux-bluefieldUpgrade linux-aws-fipsUpgrade linux-raspiUpgrade linux-azure-5.4Upgrade linux-aws-hweUpgrade linux-hwe-5.4Upgrade linux-aws-5.4Upgrade linux-raspi-5.4Upgrade linux-hweUpgrade linux-iotUpgrade linux-kvmUpgrade linux-ibmUpgrade linuxUpgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-gkeopUpgrade linux-awsUpgrade linux-ibm-5.4Upgrade linux-gcp-fipsUpgrade linux-oracle-5.4 | Nov 19, 2024 | Aug 22, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Aug 22, 2024 |
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