Memory leak in Linux kernel - CVE-2022-26878

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU62484

Memory leak in Linux kernel - CVE-2022-26878

Published: April 21, 2022


Vulnerability identifier: #VU62484
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-2022-26878
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak within the drivers/bluetooth/virtio_bt.c file in the Linux kernel. A local user can trigger leak memory and perform denial of service attack.


Affected software

Linux kernel
Ubuntu
linux-image-5.13.0-40-generic-64k (Ubuntu package)
linux-image-5.13.0-40-lowlatency (Ubuntu package)
linux-image-5.13.0-40-generic-lpae (Ubuntu package)
linux-image-5.13.0-40-generic (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-5.13.0-1021-kvm (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-5.13.0-1022-aws (Ubuntu package)
linux-image-5.13.0-1022-azure (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-5.13.0-1024-gcp (Ubuntu package)
linux-image-5.13.0-1025-raspi-nolpae (Ubuntu package)
linux-image-5.13.0-1025-raspi (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-5.13.0-1027-oracle (Ubuntu package)

How to mitigate CVE-2022-26878

Install updates from vendor's website.

Linux kernel - update to 5.16.3
linux-image-5.13.0-40-generic-64k (Ubuntu package) - addressed in versions 5.13.0-40.45, 5.13.0-40.45~20.04.1
linux-image-5.13.0-40-lowlatency (Ubuntu package) - addressed in versions 5.13.0-40.45, 5.13.0-40.45~20.04.1
linux-image-5.13.0-40-generic-lpae (Ubuntu package) - addressed in versions 5.13.0-40.45, 5.13.0-40.45~20.04.1
linux-image-5.13.0-40-generic (Ubuntu package) - addressed in versions 5.13.0-40.45, 5.13.0-40.45~20.04.1
linux-image-generic-64k-hwe-20.04 (Ubuntu package) - update to 5.13.0.40.45~20.04.25
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - update to 5.13.0.40.45~20.04.25
linux-image-generic-hwe-20.04 (Ubuntu package) - update to 5.13.0.40.45~20.04.25
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - update to 5.13.0.40.45~20.04.25
linux-image-virtual-hwe-20.04 (Ubuntu package) - update to 5.13.0.40.45~20.04.25
linux-image-virtual (Ubuntu package) - update to 5.13.0.40.49
linux-image-generic-64k (Ubuntu package) - update to 5.13.0.40.49
linux-image-generic (Ubuntu package) - update to 5.13.0.40.49
linux-image-lowlatency (Ubuntu package) - update to 5.13.0.40.49
linux-image-generic-lpae (Ubuntu package) - update to 5.13.0.40.49
linux-image-oem-20.04 (Ubuntu package) - update to 5.13.0.40.49
linux-image-kvm (Ubuntu package) - update to 5.13.0.1021.21
linux-image-5.13.0-1021-kvm (Ubuntu package) - update to 5.13.0-1021.22
linux-image-azure (Ubuntu package) - addressed in versions 5.13.0.1022.22, 5.13.0.1022.26~20.04.11
linux-image-aws (Ubuntu package) - addressed in versions 5.13.0.1022.23, 5.13.0.1022.24~20.04.15
linux-image-5.13.0-1022-aws (Ubuntu package) - addressed in versions 5.13.0-1022.24, 5.13.0-1022.24~20.04.1
linux-image-5.13.0-1022-azure (Ubuntu package) - addressed in versions 5.13.0-1022.26, 5.13.0-1022.26~20.04.1
linux-image-gke (Ubuntu package) - update to 5.13.0.1024.22
linux-image-gcp (Ubuntu package) - addressed in versions 5.13.0.1024.22, 5.13.0.1024.29~20.04.1
linux-image-5.13.0-1024-gcp (Ubuntu package) - addressed in versions 5.13.0-1024.29, 5.13.0-1024.29~20.04.1
linux-image-5.13.0-1025-raspi-nolpae (Ubuntu package) - update to 5.13.0-1025.27
linux-image-5.13.0-1025-raspi (Ubuntu package) - update to 5.13.0-1025.27
linux-image-raspi (Ubuntu package) - update to 5.13.0.1025.30
linux-image-raspi-nolpae (Ubuntu package) - update to 5.13.0.1025.30
linux-image-oracle (Ubuntu package) - addressed in versions 5.13.0.1027.27, 5.13.0.1027.32~20.04.1
linux-image-5.13.0-1027-oracle (Ubuntu package) - addressed in versions 5.13.0-1027.32, 5.13.0-1027.32~20.04.1

External References

Related Security Bulletins