Use-after-free in Linux kernel - CVE-2022-3910

Vulnerability identifier: #VU70874

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-2022-3910

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: Public exploit is available

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

The vulnerability exists due to a use-after-free error within io_uring in Linux kernel. A local user can execute arbitrary code with elevated privileges.

Linux kernel
Ubuntu
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-generic-lpae-hwe-22.04 (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-oem-22.04 (Ubuntu package)
linux-image-5.19.0-28-generic-lpae (Ubuntu package)
linux-image-5.19.0-28-generic-64k (Ubuntu package)
linux-image-5.19.0-28-generic (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-5.19.0-1011-raspi (Ubuntu package)
linux-image-5.19.0-1011-raspi-nolpae (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-5.19.0-1014-lowlatency (Ubuntu package)
linux-image-5.19.0-1014-ibm (Ubuntu package)
linux-image-5.19.0-1014-gcp (Ubuntu package)
linux-image-5.19.0-1014-lowlatency-64k (Ubuntu package)
linux-image-5.19.0-1014-oracle (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-5.19.0-1015-kvm (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-5.19.0-1016-azure (Ubuntu package)
linux-image-5.19.0-1016-aws (Ubuntu package)

Install updates from vendor's website.

linux-image-generic-64k (Ubuntu package) - update to 5.19.0.28.25
linux-image-generic (Ubuntu package) - update to 5.19.0.28.25
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 5.19.0.28.25
linux-image-generic-lpae (Ubuntu package) - update to 5.19.0.28.25
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 5.19.0.28.25
linux-image-generic-lpae-hwe-22.04 (Ubuntu package) - update to 5.19.0.28.25
linux-image-virtual (Ubuntu package) - update to 5.19.0.28.25
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 5.19.0.28.25
linux-image-oem-22.04 (Ubuntu package) - update to 5.19.0.28.25
linux-image-5.19.0-28-generic-lpae (Ubuntu package) - update to 5.19.0-28.29
linux-image-5.19.0-28-generic-64k (Ubuntu package) - update to 5.19.0-28.29
linux-image-5.19.0-28-generic (Ubuntu package) - update to 5.19.0-28.29
linux-image-raspi (Ubuntu package) - update to 5.19.0.1011.10
linux-image-raspi-nolpae (Ubuntu package) - update to 5.19.0.1011.10
linux-image-5.19.0-1011-raspi (Ubuntu package) - update to 5.19.0-1011.18
linux-image-5.19.0-1011-raspi-nolpae (Ubuntu package) - update to 5.19.0-1011.18
linux-image-ibm (Ubuntu package) - update to 5.19.0.1014.11
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 5.19.0.1014.11
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 5.19.0.1014.11
linux-image-oracle (Ubuntu package) - update to 5.19.0.1014.11
linux-image-lowlatency-64k (Ubuntu package) - update to 5.19.0.1014.11
linux-image-gcp (Ubuntu package) - update to 5.19.0.1014.11
linux-image-lowlatency (Ubuntu package) - update to 5.19.0.1014.11
linux-image-5.19.0-1014-lowlatency (Ubuntu package) - update to 5.19.0-1014.15
linux-image-5.19.0-1014-ibm (Ubuntu package) - update to 5.19.0-1014.15
linux-image-5.19.0-1014-gcp (Ubuntu package) - update to 5.19.0-1014.15
linux-image-5.19.0-1014-lowlatency-64k (Ubuntu package) - update to 5.19.0-1014.15
linux-image-5.19.0-1014-oracle (Ubuntu package) - update to 5.19.0-1014.16
linux-image-kvm (Ubuntu package) - update to 5.19.0.1015.12
linux-image-5.19.0-1015-kvm (Ubuntu package) - update to 5.19.0-1015.16
linux-image-azure (Ubuntu package) - update to 5.19.0.1016.12
linux-image-aws (Ubuntu package) - update to 5.19.0.1016.13
linux-image-5.19.0-1016-azure (Ubuntu package) - update to 5.19.0-1016.17
linux-image-5.19.0-1016-aws (Ubuntu package) - update to 5.19.0-1016.17

• Exploit #9082 - CVE-2022-3910 (CVE-2022-3910) (May 21, 2023)

• https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679
• https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679

• Privilege escalation in Linux kernel io_uring
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-gcp
• Ubuntu update for linux-ibm