NULL pointer dereference in Linux kernel - CVE-2023-52473

Vulnerability identifier: #VU90656

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-52473

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to NULL pointer dereference within the device_del() function in drivers/thermal/thermal_core.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Ubuntu
IBM DataPower Gateway
linux-starfive (Ubuntu package)
linux (Ubuntu package)
linux-azure (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-raspi (Ubuntu package)
linux-gcp (Ubuntu package)
linux-lowlatency-hwe-6.5 (Ubuntu package)
linux-azure-6.5 (Ubuntu package)
linux-starfive-6.5 (Ubuntu package)
linux-gcp-6.5 (Ubuntu package)
linux-image-6.5.0-41-generic-64k (Ubuntu package)
linux-image-6.5.0-41-generic (Ubuntu package)
linux-image-6.5.0-1017-laptop (Ubuntu package)
linux-image-6.5.0-1021-nvidia-64k (Ubuntu package)
linux-image-6.5.0-1021-nvidia (Ubuntu package)
linux-image-6.5.0-1022-oem (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-laptop-23.10 (Ubuntu package)
linux-image-nvidia-hwe-22.04 (Ubuntu package)
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package)
linux-image-nvidia-64k-6.5 (Ubuntu package)
linux-image-nvidia-6.5 (Ubuntu package)
linux-image-oem-22.04d (Ubuntu package)
linux-image-oem-22.04c (Ubuntu package)
linux-image-oem-22.04b (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
IBM Security Guardium

Install update from vendor's website.

Linux kernel - addressed in versions 6.6.14, 6.7.2, 6.8
IBM DataPower Gateway - update to 10.6.4.0
linux-starfive (Ubuntu package) - update to 6.5.0-1015.16
linux (Ubuntu package) - update to 6.5.0-41.41
linux-azure (Ubuntu package) - update to 6.5.0-1022.23
linux-lowlatency (Ubuntu package) - update to 6.5.0-41.41.1
linux-raspi (Ubuntu package) - update to 6.5.0-1018.21
linux-gcp (Ubuntu package) - update to 6.5.0-1022.24
linux-lowlatency-hwe-6.5 (Ubuntu package) - update to 6.5.0-41.41.1~22.04.1
linux-azure-6.5 (Ubuntu package) - update to 6.5.0-1022.23~22.04.1
linux-starfive-6.5 (Ubuntu package) - update to 6.5.0-1015.16~22.04.1
linux-gcp-6.5 (Ubuntu package) - update to 6.5.0-1022.24~22.04.1
IBM Security Guardium - addressed in versions 12.0p31, 12.0p106
linux-image-6.5.0-41-generic-64k (Ubuntu package) - update to 6.5.0-41.41~22.04.2
linux-image-6.5.0-41-generic (Ubuntu package) - update to 6.5.0-41.41~22.04.2
linux-image-6.5.0-1017-laptop (Ubuntu package) - update to 6.5.0-1017.20
linux-image-6.5.0-1021-nvidia-64k (Ubuntu package) - update to 6.5.0-1021.22
linux-image-6.5.0-1021-nvidia (Ubuntu package) - update to 6.5.0-1021.22
linux-image-6.5.0-1022-oem (Ubuntu package) - update to 6.5.0-1022.23
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.5.0.41.41~22.04.2
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.5.0.41.41~22.04.2
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.5.0.41.41~22.04.2
linux-image-laptop-23.10 (Ubuntu package) - update to 6.5.0.1017.20
linux-image-nvidia-hwe-22.04 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-nvidia-64k-6.5 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-nvidia-6.5 (Ubuntu package) - update to 6.5.0.1021.29
linux-image-oem-22.04d (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04c (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04b (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04a (Ubuntu package) - update to 6.5.0.1022.24
linux-image-oem-22.04 (Ubuntu package) - update to 6.5.0.1022.24

• https://git.kernel.org/stable/c/335176dd8ebaca6493807dceea33c478305667fa
• https://git.kernel.org/stable/c/02871710b93058eb1249d5847c0b2d1c2c3c98ae
• https://git.kernel.org/stable/c/04e6ccfc93c5a1aa1d75a537cf27e418895e20ea
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.14
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.2
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8

• NULL pointer dereference in Linux kernel thermal driver
• Ubuntu update for linux-oem-6.5
• Ubuntu update for linux-laptop
• Ubuntu update for linux-nvidia-6.5
• Ubuntu update for linux-hwe-6.5
• Multiple vulnerabilities in IBM Security Guardium
• Multiple vulnerabilities in IBM DataPower Gateway
• Ubuntu update for linux, linux-gcp, linux-gcp-6.5 and more
• Ubuntu update for linux-azure, linux-azure-6.5, linux-starfive and more