Race condition in Linux kernel - CVE-2023-32258

Vulnerability identifier: #VU80501

CSH Severity: High

CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-32258

CWE-ID: CWE-362

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition when processing SMB2_LOGOFF and SMB2_CLOSE commands in ksmbd. A remote attacker can send specially crafted data to the server and execute arbitrary code on the system.

Linux kernel
Ubuntu
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-oem-20.04c (Ubuntu package)
linux-image-oem-20.04b (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-102-lowlatency (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-102-generic-lpae (Ubuntu package)
linux-image-oem-20.04d (Ubuntu package)
linux-image-5.15.0-102-generic-64k (Ubuntu package)
linux-image-5.15.0-102-generic (Ubuntu package)
linux-image-5.15.0-102-lowlatency-64k (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-gkeop-5.15 (Ubuntu package)
linux-image-5.15.0-1040-gkeop (Ubuntu package)
linux-image-5.15.0-1048-nvidia (Ubuntu package)
linux-image-5.15.0-1048-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.15.0-1050-raspi (Ubuntu package)
linux-image-5.15.0-1050-ibm (Ubuntu package)
linux-image-5.15.0-1052-intel-iotg (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-5.15.0-1054-gke (Ubuntu package)
linux-image-5.15.0-1054-kvm (Ubuntu package)
linux-image-gcp-lts-22.04 (Ubuntu package)
linux-image-oracle-lts-22.04 (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-5.15.0-1055-oracle (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-5.15.0-1055-gcp (Ubuntu package)
linux-image-aws-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1057-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-azure-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1060-azure-fde (Ubuntu package)
linux-image-5.15.0-1060-azure (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure-fde-lts-22.04 (Ubuntu package)
linux-image-6.2.0-32-generic-lpae (Ubuntu package)
linux-image-6.2.0-32-generic-64k (Ubuntu package)
linux-image-6.2.0-32-generic (Ubuntu package)
linux-image-generic-64k-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-generic-lpae-hwe-22.04 (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-6.2.0-1004-starfive (Ubuntu package)
linux-image-starfive (Ubuntu package)
linux-image-6.2.0-1009-ibm (Ubuntu package)
linux-image-6.2.0-1011-azure (Ubuntu package)
linux-image-6.2.0-1011-oracle (Ubuntu package)
linux-image-6.2.0-1011-aws (Ubuntu package)
linux-image-6.2.0-1012-kvm (Ubuntu package)
linux-image-6.2.0-1012-lowlatency-64k (Ubuntu package)
linux-image-6.2.0-1012-lowlatency (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-6.2.0-1012-raspi (Ubuntu package)
linux-image-6.2.0-1013-gcp (Ubuntu package)
linux-image-intel-iotg (Ubuntu package)
linux-image-intel (Ubuntu package)

Install updates from vendor's website.

linux-image-lowlatency (Ubuntu package) - addressed in versions 5.15.0.102.98, 6.2.0.1012.12
linux-image-lowlatency-64k (Ubuntu package) - addressed in versions 5.15.0.102.98, 6.2.0.1012.12
linux-image-generic-lpae (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.32.32
linux-image-generic-64k (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.32.32
linux-image-generic (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.32.32
linux-image-virtual (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.32.32
linux-image-oem-20.04c (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-oem-20.04b (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-oem-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-5.15.0-102-lowlatency (Ubuntu package) - update to 5.15.0-102.112~20.04.1
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-generic-hwe-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-generic-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-5.15.0-102-generic-lpae (Ubuntu package) - update to 5.15.0-102.112~20.04.1
linux-image-oem-20.04d (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-5.15.0-102-generic-64k (Ubuntu package) - update to 5.15.0-102.112~20.04.1
linux-image-5.15.0-102-generic (Ubuntu package) - update to 5.15.0-102.112~20.04.1
linux-image-5.15.0-102-lowlatency-64k (Ubuntu package) - update to 5.15.0-102.112~20.04.1
linux-image-virtual-hwe-20.04 (Ubuntu package) - update to 5.15.0.102.112~20.04.1
linux-image-gkeop (Ubuntu package) - update to 5.15.0.1040.39
linux-image-gkeop-5.15 (Ubuntu package) - addressed in versions 5.15.0.1040.39, 5.15.0.1040.46~20.04.36
linux-image-5.15.0-1040-gkeop (Ubuntu package) - update to 5.15.0-1040.46~20.04.1
linux-image-5.15.0-1048-nvidia (Ubuntu package) - update to 5.15.0-1048.48
linux-image-5.15.0-1048-nvidia-lowlatency (Ubuntu package) - update to 5.15.0-1048.48
linux-image-nvidia-lowlatency (Ubuntu package) - update to 5.15.0.1048.48
linux-image-nvidia (Ubuntu package) - update to 5.15.0.1048.48
linux-image-ibm (Ubuntu package) - addressed in versions 5.15.0.1050.46, 5.15.0.1050.53~20.04.1, 6.2.0.1009.9
linux-image-raspi-nolpae (Ubuntu package) - addressed in versions 5.15.0.1050.48, 6.2.0.1012.15
linux-image-raspi (Ubuntu package) - addressed in versions 5.15.0.1050.48, 6.2.0.1012.15
linux-image-5.15.0-1050-raspi (Ubuntu package) - update to 5.15.0-1050.53
linux-image-5.15.0-1050-ibm (Ubuntu package) - update to 5.15.0-1050.53~20.04.1
linux-image-intel-iotg (Ubuntu package) - addressed in versions 5.15.0.1052.52, 5.15.0.1052.58~20.04.1
linux-image-intel (Ubuntu package) - update to 5.15.0.1052.58~20.04.1
linux-image-5.15.0-1052-intel-iotg (Ubuntu package) - update to 5.15.0-1052.58~20.04.1
linux-image-kvm (Ubuntu package) - addressed in versions 5.15.0.1054.50, 6.2.0.1012.12
linux-image-gke (Ubuntu package) - update to 5.15.0.1054.53
linux-image-gke-5.15 (Ubuntu package) - update to 5.15.0.1054.53
linux-image-5.15.0-1054-gke (Ubuntu package) - update to 5.15.0-1054.59
linux-image-5.15.0-1054-kvm (Ubuntu package) - update to 5.15.0-1054.59
linux-image-gcp-lts-22.04 (Ubuntu package) - update to 5.15.0.1055.51
linux-image-oracle-lts-22.04 (Ubuntu package) - update to 5.15.0.1055.51
linux-image-oracle (Ubuntu package) - addressed in versions 5.15.0.1055.61~20.04.1, 6.2.0.1011.11
linux-image-5.15.0-1055-oracle (Ubuntu package) - update to 5.15.0-1055.61~20.04.1
linux-image-gcp (Ubuntu package) - addressed in versions 5.15.0.1055.63~20.04.1, 6.2.0.1013.13, 6.2.0.1013.13~22.04.1
linux-image-5.15.0-1055-gcp (Ubuntu package) - update to 5.15.0-1055.63~20.04.1
linux-image-aws-lts-22.04 (Ubuntu package) - update to 5.15.0.1057.58
linux-image-5.15.0-1057-aws (Ubuntu package) - update to 5.15.0-1057.63~20.04.1
linux-image-aws (Ubuntu package) - addressed in versions 5.15.0.1057.63~20.04.1, 6.2.0.1011.11~22.04.1, 6.2.0.1011.12
linux-image-azure-lts-22.04 (Ubuntu package) - update to 5.15.0.1060.58
linux-image-5.15.0-1060-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1060.69.1, 5.15.0-1060.69~20.04.1.1
linux-image-5.15.0-1060-azure (Ubuntu package) - update to 5.15.0-1060.69~20.04.1
linux-image-azure (Ubuntu package) - addressed in versions 5.15.0.1060.69~20.04.1, 6.2.0.1011.11
linux-image-azure-cvm (Ubuntu package) - update to 5.15.0.1060.69~20.04.1
linux-image-azure-fde (Ubuntu package) - update to 5.15.0.1060.69~20.04.1.39
linux-image-azure-fde-lts-22.04 (Ubuntu package) - update to 5.15.0.1060.69.38
linux-image-6.2.0-32-generic-lpae (Ubuntu package) - update to 6.2.0-32.32~22.04.1
linux-image-6.2.0-32-generic-64k (Ubuntu package) - update to 6.2.0-32.32~22.04.1
linux-image-6.2.0-32-generic (Ubuntu package) - update to 6.2.0-32.32~22.04.1
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.2.0.32.32~22.04.9
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.2.0.32.32~22.04.9
linux-image-generic-lpae-hwe-22.04 (Ubuntu package) - update to 6.2.0.32.32~22.04.9
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.2.0.32.32~22.04.9
linux-image-6.2.0-1004-starfive (Ubuntu package) - update to 6.2.0-1004.5
linux-image-starfive (Ubuntu package) - update to 6.2.0.1004.7
linux-image-6.2.0-1009-ibm (Ubuntu package) - update to 6.2.0-1009.9
linux-image-6.2.0-1011-azure (Ubuntu package) - update to 6.2.0-1011.11
linux-image-6.2.0-1011-oracle (Ubuntu package) - update to 6.2.0-1011.11
linux-image-6.2.0-1011-aws (Ubuntu package) - update to 6.2.0-1011.11~22.04.1
linux-image-6.2.0-1012-kvm (Ubuntu package) - update to 6.2.0-1012.12
linux-image-6.2.0-1012-lowlatency-64k (Ubuntu package) - update to 6.2.0-1012.12~22.04.1
linux-image-6.2.0-1012-lowlatency (Ubuntu package) - update to 6.2.0-1012.12~22.04.1
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 6.2.0.1012.12~22.04.9
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 6.2.0.1012.12~22.04.9
linux-image-6.2.0-1012-raspi (Ubuntu package) - update to 6.2.0-1012.14
linux-image-6.2.0-1013-gcp (Ubuntu package) - addressed in versions 6.2.0-1013.13, 6.2.0-1013.13~22.04.1

• https://bugzilla.redhat.com/show_bug.cgi?id=2219809
• https://www.zerodayinitiative.com/advisories/ZDI-23-706/
• https://github.com/torvalds/linux/commit/abcc506a9a71976a8b4c9bf3ee6efd13229c1e19

• Remote code execution in Linux Kernel ksmbd
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-gcp
• Ubuntu update for linux
• Ubuntu update for linux-aws