Out-of-bounds write in Linux kernel - CVE-2022-1943

Vulnerability identifier: #VU66806

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-2022-1943

CWE-ID: CWE-787

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 boundary error in the udf_write_fi() function within the UDF file system functionality. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Linux kernel
Slackware Linux
Ubuntu
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-lpae-hwe-22.04 (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-5.15.0-47-generic (Ubuntu package)
linux-image-5.15.0-47-generic-64k (Ubuntu package)
linux-image-5.15.0-47-generic-lpae (Ubuntu package)
linux-image-5.15.0-47-lowlatency (Ubuntu package)
linux-image-5.15.0-47-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-48-generic (Ubuntu package)
linux-image-5.15.0-48-lowlatency (Ubuntu package)
linux-image-5.15.0-48-generic-lpae (Ubuntu package)
linux-image-5.15.0-48-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-48-generic-64k (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-1002-gkeop (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-gkeop-5.15 (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-5.15.0-1013-ibm (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.15.0-1014-raspi (Ubuntu package)
linux-image-5.15.0-1014-raspi-nolpae (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-5.15.0-1015-gke (Ubuntu package)
linux-image-5.15.0-1015-intel-iotg (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-5.15.0-1017-kvm (Ubuntu package)
linux-image-5.15.0-1017-oracle (Ubuntu package)
linux-image-5.15.0-1017-gcp (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-5.15.0-1019-aws (Ubuntu package)
linux-image-5.15.0-1019-azure (Ubuntu package)
linux-5.15.63/kernel-generic
linux-5.15.63/kernel-modules
linux-5.15.63/kernel-huge
linux-5.15.63/kernel-headers
linux-image-intel-iotg (Ubuntu package)

Install updates from vendor's website.

linux-image-lowlatency (Ubuntu package) - update to 5.15.0.47.44
linux-image-lowlatency-64k (Ubuntu package) - update to 5.15.0.47.44
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 5.15.0.47.44
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 5.15.0.47.44
linux-image-virtual (Ubuntu package) - update to 5.15.0.47.47
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 5.15.0.47.47
linux-image-generic (Ubuntu package) - update to 5.15.0.47.47
linux-image-generic-64k (Ubuntu package) - update to 5.15.0.47.47
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 5.15.0.47.47
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 5.15.0.47.47
linux-image-generic-lpae (Ubuntu package) - update to 5.15.0.47.47
linux-image-generic-lpae-hwe-22.04 (Ubuntu package) - update to 5.15.0.47.47
linux-image-oem-20.04 (Ubuntu package) - update to 5.15.0.47.47
linux-image-5.15.0-47-generic (Ubuntu package) - update to 5.15.0-47.51
linux-image-5.15.0-47-generic-64k (Ubuntu package) - update to 5.15.0-47.51
linux-image-5.15.0-47-generic-lpae (Ubuntu package) - update to 5.15.0-47.51
linux-image-5.15.0-47-lowlatency (Ubuntu package) - update to 5.15.0-47.53
linux-image-5.15.0-47-lowlatency-64k (Ubuntu package) - update to 5.15.0-47.53
linux-image-5.15.0-48-generic (Ubuntu package) - update to 5.15.0-48.54~20.04.1
linux-image-5.15.0-48-lowlatency (Ubuntu package) - update to 5.15.0-48.54~20.04.1
linux-image-5.15.0-48-generic-lpae (Ubuntu package) - update to 5.15.0-48.54~20.04.1
linux-image-5.15.0-48-lowlatency-64k (Ubuntu package) - update to 5.15.0-48.54~20.04.1
linux-image-5.15.0-48-generic-64k (Ubuntu package) - update to 5.15.0-48.54~20.04.1
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - update to 5.15.0.48.54~20.04.16
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.48.54~20.04.16
linux-image-generic-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.48.54~20.04.18
linux-image-virtual-hwe-20.04 (Ubuntu package) - update to 5.15.0.48.54~20.04.18
linux-image-generic-hwe-20.04 (Ubuntu package) - update to 5.15.0.48.54~20.04.18
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - update to 5.15.0.48.54~20.04.18
linux-image-5.15.0-1002-gkeop (Ubuntu package) - update to 5.15.0-1002.4
linux-image-gkeop (Ubuntu package) - update to 5.15.0.1002.4
linux-image-gkeop-5.15 (Ubuntu package) - update to 5.15.0.1002.4
linux-image-ibm (Ubuntu package) - update to 5.15.0.1013.12
linux-image-5.15.0-1013-ibm (Ubuntu package) - update to 5.15.0-1013.15
linux-image-raspi-nolpae (Ubuntu package) - update to 5.15.0.1014.13
linux-image-raspi (Ubuntu package) - update to 5.15.0.1014.13
linux-image-5.15.0-1014-raspi (Ubuntu package) - update to 5.15.0-1014.16
linux-image-5.15.0-1014-raspi-nolpae (Ubuntu package) - update to 5.15.0-1014.16
linux-image-intel-iotg (Ubuntu package) - update to 5.15.0.1015.16
linux-image-gke (Ubuntu package) - update to 5.15.0.1015.17
linux-image-gke-5.15 (Ubuntu package) - addressed in versions 5.15.0.1015.17, 5.15.0.1015.18~20.04.1
linux-image-5.15.0-1015-gke (Ubuntu package) - addressed in versions 5.15.0-1015.18, 5.15.0-1015.18~20.04.1
linux-image-5.15.0-1015-intel-iotg (Ubuntu package) - update to 5.15.0-1015.20
linux-image-oracle (Ubuntu package) - update to 5.15.0.1017.15
linux-image-kvm (Ubuntu package) - update to 5.15.0.1017.15
linux-image-gcp (Ubuntu package) - addressed in versions 5.15.0.1017.15, 5.15.0.1017.23~20.04.1
linux-image-5.15.0-1017-kvm (Ubuntu package) - update to 5.15.0-1017.21
linux-image-5.15.0-1017-oracle (Ubuntu package) - update to 5.15.0-1017.22
linux-image-5.15.0-1017-gcp (Ubuntu package) - addressed in versions 5.15.0-1017.23, 5.15.0-1017.23~20.04.2
linux-image-azure (Ubuntu package) - addressed in versions 5.15.0.1019.18, 5.15.0.1019.22~20.04.12
linux-image-aws (Ubuntu package) - addressed in versions 5.15.0.1019.19, 5.15.0.1019.23~20.04.11
linux-image-5.15.0-1019-aws (Ubuntu package) - addressed in versions 5.15.0-1019.23, 5.15.0-1019.23~20.04.1
linux-image-5.15.0-1019-azure (Ubuntu package) - addressed in versions 5.15.0-1019.24, 5.15.0-1019.24~20.04.1
linux-5.15.63/kernel-generic - update to 5.15.63
linux-5.15.63/kernel-modules - update to 5.15.63
linux-5.15.63/kernel-huge - update to 5.15.63
linux-5.15.63/kernel-headers - update to 5.15.63

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1ad35dd0548ce947d97aaf92f7f2f9a202951cf

• Privilege escalation in Linux kernel UDF implementation
• Slackware Linux update for kernel
• Ubuntu update for linux
• Ubuntu update for linux-oracle
• Ubuntu update for linux-raspi
• Ubuntu update for linux-intel-iotg
• Ubuntu update for linux-hwe-5.15