Use-after-free in Linux kernel - CVE-2024-50114

Vulnerability identifier: #VU99803

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-50114

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the __kvm_vgic_vcpu_destroy() function in arch/arm64/kvm/vgic/vgic-init.c. A local user can escalate privileges on the system.

Linux kernel
Ubuntu
linux-image-6.11.0-18-generic (Ubuntu package)
linux-image-6.11.0-18-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-64k-hwe-24.04 (Ubuntu package)
linux-image-generic-hwe-24.04 (Ubuntu package)
linux-image-virtual-hwe-24.04 (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-oem-24.04 (Ubuntu package)
linux-image-oem-24.04a (Ubuntu package)
linux-image-realtime-hwe-24.04 (Ubuntu package)
linux-image-6.11.0-1005-realtime (Ubuntu package)
linux-image-realtime (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-6.11.0-1008-raspi (Ubuntu package)
linux-image-6.11.0-1009-azure (Ubuntu package)
linux-image-6.11.0-1009-azure-fde (Ubuntu package)
linux-image-6.11.0-1009-gcp (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-6.11.0-1009-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-6.11.0-1010-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-6.11.0-1010-lowlatency (Ubuntu package)
linux-image-6.11.0-1011-oracle-64k (Ubuntu package)
linux-image-6.11.0-1011-oracle (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-oracle-64k (Ubuntu package)
linux-image-6.11.0-1015-oem (Ubuntu package)
linux-image-oem-24.04b (Ubuntu package)

Install update from vendor's website.

Linux kernel - addressed in versions 6.11.6, 6.12
linux-image-6.11.0-18-generic (Ubuntu package) - update to 6.11.0-18.18
linux-image-6.11.0-18-generic-64k (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic-64k (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic-64k-hwe-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic-hwe-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-virtual-hwe-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-virtual (Ubuntu package) - update to 6.11.0-18.18
linux-image-oem-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-oem-24.04a (Ubuntu package) - update to 6.11.0-18.18
linux-image-realtime-hwe-24.04 (Ubuntu package) - update to 6.11.0-1005.5
linux-image-6.11.0-1005-realtime (Ubuntu package) - update to 6.11.0-1005.5
linux-image-realtime (Ubuntu package) - update to 6.11.0-1005.5
linux-image-raspi (Ubuntu package) - update to 6.11.0-1008.8
linux-image-6.11.0-1008-raspi (Ubuntu package) - update to 6.11.0-1008.8
linux-image-6.11.0-1009-azure (Ubuntu package) - update to 6.11.0-1009.9
linux-image-6.11.0-1009-azure-fde (Ubuntu package) - update to 6.11.0-1009.9
linux-image-6.11.0-1009-gcp (Ubuntu package) - update to 6.11.0-1009.9
linux-image-gcp (Ubuntu package) - update to 6.11.0-1009.9
linux-image-azure-fde (Ubuntu package) - update to 6.11.0-1009.9
linux-image-azure (Ubuntu package) - update to 6.11.0-1009.9
linux-image-6.11.0-1009-aws (Ubuntu package) - update to 6.11.0-1009.10
linux-image-aws (Ubuntu package) - update to 6.11.0-1009.10
linux-image-6.11.0-1010-lowlatency-64k (Ubuntu package) - update to 6.11.0-1010.11
linux-image-lowlatency-64k (Ubuntu package) - update to 6.11.0-1010.11
linux-image-lowlatency (Ubuntu package) - update to 6.11.0-1010.11
linux-image-6.11.0-1010-lowlatency (Ubuntu package) - update to 6.11.0-1010.11
linux-image-6.11.0-1011-oracle-64k (Ubuntu package) - update to 6.11.0-1011.12
linux-image-6.11.0-1011-oracle (Ubuntu package) - update to 6.11.0-1011.12
linux-image-oracle (Ubuntu package) - update to 6.11.0-1011.12
linux-image-oracle-64k (Ubuntu package) - update to 6.11.0-1011.12
linux-image-6.11.0-1015-oem (Ubuntu package) - update to 6.11.0-1015.15
linux-image-oem-24.04b (Ubuntu package) - update to 6.11.0-1015.15

• https://git.kernel.org/stable/c/6bcc2890b883ba1d16b8942937750565f6e9db0d
• https://git.kernel.org/stable/c/ae8f8b37610269009326f4318df161206c59843e
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.6
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12

• Use-after-free in Linux kernel kvm vgic
• Ubuntu update for linux
• Ubuntu update for linux-aws
• Ubuntu update for linux-oem-6.11