NULL pointer dereference in Linux kernel - CVE-2024-44955

Vulnerability identifier: #VU96853

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-2024-44955

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 amdgpu_dm_mst_connector_early_unregister(), dm_dp_mst_detect() and is_dsc_need_re_compute() functions in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Ubuntu
linux-image-6.8.1-1020-realtime (Ubuntu package)
linux-image-realtime (Ubuntu package)
linux-image-realtime-hwe-24.04 (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-6.8.0-58-lowlatency-64k (Ubuntu package)
linux-image-6.8.0-58-lowlatency (Ubuntu package)
linux-image-6.8.0-58-generic-64k (Ubuntu package)
linux-image-6.8.0-58-generic (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-oem-22.04a (Ubuntu package)
linux-image-virtual-hwe-22.04 (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-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-6.8.0-1010-gkeop (Ubuntu package)
linux-image-gkeop-6.8 (Ubuntu package)
linux-image-6.8.0-1014-azure-nvidia (Ubuntu package)
linux-image-azure-nvidia (Ubuntu package)
linux-image-6.8.0-1023-gke (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-ibm-lts-24.04 (Ubuntu package)
linux-image-ibm-classic (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-6.8.0-1024-ibm (Ubuntu package)
linux-image-6.8.0-1024-oracle (Ubuntu package)
linux-image-6.8.0-1024-oracle-64k (Ubuntu package)
linux-image-oracle-lts-24.04 (Ubuntu package)
linux-image-oracle-64k-lts-24.04 (Ubuntu package)
linux-image-oracle-64k (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-6.8.0-1026-oem (Ubuntu package)
linux-image-oem-24.04a (Ubuntu package)
linux-image-oem-24.04 (Ubuntu package)
linux-image-6.8.0-1026-nvidia-64k (Ubuntu package)
linux-image-nvidia-64k (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-6.8.0-1026-nvidia (Ubuntu package)
linux-image-6.8.0-1026-nvidia-lowlatency (Ubuntu package)
linux-image-6.8.0-1026-nvidia-lowlatency-64k (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia-lowlatency-64k (Ubuntu package)
linux-image-nvidia-6.8 (Ubuntu package)
linux-image-nvidia-64k-6.8 (Ubuntu package)
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package)
linux-image-nvidia-hwe-22.04 (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-6.8.0-1027-aws (Ubuntu package)
linux-image-aws-lts-24.04 (Ubuntu package)
linux-image-6.8.0-1027-azure (Ubuntu package)
linux-image-6.8.0-1027-azure-fde (Ubuntu package)
linux-image-azure-fde-lts-24.04 (Ubuntu package)
linux-image-azure-lts-24.04 (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-gcp-lts-24.04 (Ubuntu package)
linux-image-gcp-64k-lts-24.04 (Ubuntu package)
linux-image-6.8.0-1028-gcp-64k (Ubuntu package)
linux-image-6.8.0-1028-gcp (Ubuntu package)
linux-image-gcp-64k (Ubuntu package)
linux-image-gcp (Ubuntu package)

Install update from vendor's website.

Linux kernel - addressed in versions 6.6.64, 6.10.5, 6.11
linux-image-6.8.1-1020-realtime (Ubuntu package) - update to Ubuntu Pro
linux-image-realtime (Ubuntu package) - update to Ubuntu Pro
linux-image-realtime-hwe-24.04 (Ubuntu package) - update to Ubuntu Pro
linux-image-generic (Ubuntu package) - update to 6.8.0-58.60
linux-image-generic-64k (Ubuntu package) - update to 6.8.0-58.60
linux-image-generic-lpae (Ubuntu package) - update to 6.8.0-58.60
linux-image-kvm (Ubuntu package) - update to 6.8.0-58.60
linux-image-virtual (Ubuntu package) - update to 6.8.0-58.60
linux-image-6.8.0-58-lowlatency-64k (Ubuntu package) - addressed in versions 6.8.0-58.60.1, 6.8.0-58.60.1~22.04.1
linux-image-6.8.0-58-lowlatency (Ubuntu package) - addressed in versions 6.8.0-58.60.1, 6.8.0-58.60.1~22.04.1
linux-image-6.8.0-58-generic-64k (Ubuntu package) - addressed in versions 6.8.0-58.60+1, 6.8.0-58.60~22.04.1
linux-image-6.8.0-58-generic (Ubuntu package) - addressed in versions 6.8.0-58.60+1, 6.8.0-58.60~22.04.1
linux-image-lowlatency (Ubuntu package) - update to 6.8.0-58.60.1
linux-image-lowlatency-64k (Ubuntu package) - update to 6.8.0-58.60.1
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 6.8.0-58.60.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-58.60.1~22.04.1
linux-image-oem-22.04a (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-oem-22.04d (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-oem-22.04c (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-oem-22.04b (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-oem-22.04 (Ubuntu package) - update to 6.8.0-58.60~22.04.1
linux-image-gkeop (Ubuntu package) - update to 6.8.0-1010.12
linux-image-6.8.0-1010-gkeop (Ubuntu package) - update to 6.8.0-1010.12
linux-image-gkeop-6.8 (Ubuntu package) - update to 6.8.0-1010.12
linux-image-6.8.0-1014-azure-nvidia (Ubuntu package) - update to 6.8.0-1014.15
linux-image-azure-nvidia (Ubuntu package) - update to 6.8.0-1014.15
linux-image-6.8.0-1023-gke (Ubuntu package) - update to 6.8.0-1023.27
linux-image-gke (Ubuntu package) - update to 6.8.0-1023.27
linux-image-ibm-lts-24.04 (Ubuntu package) - update to 6.8.0-1024.24
linux-image-ibm-classic (Ubuntu package) - update to 6.8.0-1024.24
linux-image-ibm (Ubuntu package) - update to 6.8.0-1024.24
linux-image-6.8.0-1024-ibm (Ubuntu package) - update to 6.8.0-1024.24
linux-image-6.8.0-1024-oracle (Ubuntu package) - addressed in versions 6.8.0-1024.25, 6.8.0-1024.25~22.04.1
linux-image-6.8.0-1024-oracle-64k (Ubuntu package) - addressed in versions 6.8.0-1024.25, 6.8.0-1024.25~22.04.1
linux-image-oracle-lts-24.04 (Ubuntu package) - update to 6.8.0-1024.25
linux-image-oracle-64k-lts-24.04 (Ubuntu package) - update to 6.8.0-1024.25
linux-image-oracle-64k (Ubuntu package) - addressed in versions 6.8.0-1024.25, 6.8.0-1024.25~22.04.1
linux-image-oracle (Ubuntu package) - addressed in versions 6.8.0-1024.25, 6.8.0-1024.25~22.04.1
linux-image-6.8.0-1026-oem (Ubuntu package) - update to 6.8.0-1026.26
linux-image-oem-24.04a (Ubuntu package) - update to 6.8.0-1026.26
linux-image-oem-24.04 (Ubuntu package) - update to 6.8.0-1026.26
linux-image-6.8.0-1026-nvidia-64k (Ubuntu package) - addressed in versions 6.8.0-1026.29, 6.8.0-1026.29~22.04.1
linux-image-nvidia-64k (Ubuntu package) - update to 6.8.0-1026.29
linux-image-nvidia (Ubuntu package) - update to 6.8.0-1026.29
linux-image-6.8.0-1026-nvidia (Ubuntu package) - addressed in versions 6.8.0-1026.29, 6.8.0-1026.29~22.04.1
linux-image-6.8.0-1026-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1026.29.1
linux-image-6.8.0-1026-nvidia-lowlatency-64k (Ubuntu package) - update to 6.8.0-1026.29.1
linux-image-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1026.29.1
linux-image-nvidia-lowlatency-64k (Ubuntu package) - update to 6.8.0-1026.29.1
linux-image-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1026.29~22.04.1
linux-image-nvidia-64k-6.8 (Ubuntu package) - update to 6.8.0-1026.29~22.04.1
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package) - update to 6.8.0-1026.29~22.04.1
linux-image-nvidia-hwe-22.04 (Ubuntu package) - update to 6.8.0-1026.29~22.04.1
linux-image-aws (Ubuntu package) - addressed in versions 6.8.0-1027.29, 6.8.0-1027.29~22.04.1
linux-image-6.8.0-1027-aws (Ubuntu package) - addressed in versions 6.8.0-1027.29, 6.8.0-1027.29~22.04.1
linux-image-aws-lts-24.04 (Ubuntu package) - update to 6.8.0-1027.29
linux-image-6.8.0-1027-azure (Ubuntu package) - addressed in versions 6.8.0-1027.32, 6.8.0-1027.32~22.04.1
linux-image-6.8.0-1027-azure-fde (Ubuntu package) - addressed in versions 6.8.0-1027.32, 6.8.0-1027.32~22.04.1
linux-image-azure-fde-lts-24.04 (Ubuntu package) - update to 6.8.0-1027.32
linux-image-azure-lts-24.04 (Ubuntu package) - update to 6.8.0-1027.32
linux-image-azure-fde (Ubuntu package) - update to 6.8.0-1027.32~22.04.1
linux-image-azure (Ubuntu package) - update to 6.8.0-1027.32~22.04.1
linux-image-gcp-lts-24.04 (Ubuntu package) - update to 6.8.0-1028.30
linux-image-gcp-64k-lts-24.04 (Ubuntu package) - update to 6.8.0-1028.30
linux-image-6.8.0-1028-gcp-64k (Ubuntu package) - addressed in versions 6.8.0-1028.30, 6.8.0-1028.30~22.04.1
linux-image-6.8.0-1028-gcp (Ubuntu package) - addressed in versions 6.8.0-1028.30, 6.8.0-1028.30~22.04.1
linux-image-gcp-64k (Ubuntu package) - update to 6.8.0-1028.30~22.04.1
linux-image-gcp (Ubuntu package) - update to 6.8.0-1028.30~22.04.1

• https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263
• https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.5
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.64

• NULL pointer dereference in Linux kernel display amdgpu_dm driver
• Ubuntu update for linux-gcp
• Ubuntu update for linux
• Ubuntu update for linux-gcp-6.8
• Ubuntu update for linux-aws-6.8
• Ubuntu update for linux-realtime
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-azure-nvidia