NULL pointer dereference in Linux kernel controller dwc driver

1) NULL pointer dereference

EUVDB-ID: #VU96127

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-43823

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the ks_pcie_setup_rc_app_regs() and ks_pcie_host_init() functions in drivers/pci/controller/dwc/pci-keystone.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/bbba48ad67c53feea05936ea1e029dcca8057506
http://git.kernel.org/stable/c/0a6f1b5fe8ef8268aaa069035639968ceeea0a23
http://git.kernel.org/stable/c/dbcdd1863ba2ec9b76ec131df25d797709e05597
http://git.kernel.org/stable/c/a231707a91f323af1e5d9f1722055ec2fc1c7775

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.