Off-by-one in Linux kernel - CVE-2023-38429

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Main Vulnerability Database Vulnerabilities #VU80497

Off-by-one in Linux kernel - CVE-2023-38429

Published: September 6, 2023


Vulnerability identifier: #VU80497
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-38429
CWE-ID: CWE-193
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to an off-by-one error within the ksmbd_smb2_check_message() function in fs/ksmbd/connection.c. A remote attacker can trigger an off-by-one error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Linux kernel
Ubuntu
openEuler
python3-perf
kernel
kernel-tools-devel
bpftool
kernel-devel
kernel-debuginfo
kernel-debugsource
perf
kernel-source
perf-debuginfo
kernel-tools-debuginfo
python3-perf-debuginfo
bpftool-debuginfo
kernel-headers
kernel-tools
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-83-generic (Ubuntu package)
linux-image-5.15.0-83-generic-64k (Ubuntu package)
linux-image-5.15.0-83-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-83-lowlatency (Ubuntu package)
linux-image-5.15.0-83-generic-lpae (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-oem-20.04b (Ubuntu package)
linux-image-oem-20.04c (Ubuntu package)
linux-image-oem-20.04d (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-gkeop-5.15 (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-5.15.0-1027-gkeop (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-5.15.0-1032-nvidia (Ubuntu package)
linux-image-5.15.0-1032-nvidia-lowlatency (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-5.15.0-1037-ibm (Ubuntu package)
linux-image-5.15.0-1037-raspi (Ubuntu package)
linux-image-5.15.0-1039-intel-iotg (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-gcp-lts-22.04 (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-5.15.0-1041-gke (Ubuntu package)
linux-image-5.15.0-1041-kvm (Ubuntu package)
linux-image-5.15.0-1041-gcp (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-oracle-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1042-oracle (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-aws-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1044-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-azure-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1046-azure (Ubuntu package)
linux-image-5.15.0-1046-azure-fde (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-fde-lts-22.04 (Ubuntu package)
linux-image-6.2.0-32-generic (Ubuntu package)
linux-image-6.2.0-32-generic-64k (Ubuntu package)
linux-image-6.2.0-32-generic-lpae (Ubuntu package)
linux-image-generic-lpae-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-generic-64k-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-oracle (Ubuntu package)
linux-image-6.2.0-1011-azure (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-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-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)

How to mitigate CVE-2023-38429

Install updates from vendor's website.

Linux kernel - update to 6.3.4
python3-perf - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-tools-devel - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
bpftool - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-devel - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-debuginfo - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-debugsource - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
perf - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-source - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
perf-debuginfo - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-tools-debuginfo - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
python3-perf-debuginfo - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
bpftool-debuginfo - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-headers - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
kernel-tools - addressed in versions 5.10.0-60.106.0.133, 5.10.0-136.44.0.122, 5.10.0-153.22.0.98
linux-image-generic-64k (Ubuntu package) - addressed in versions 5.15.0.83.80, 6.2.0.32.32
linux-image-generic (Ubuntu package) - addressed in versions 5.15.0.83.80, 6.2.0.32.32
linux-image-generic-lpae (Ubuntu package) - addressed in versions 5.15.0.83.80, 6.2.0.32.32
linux-image-virtual (Ubuntu package) - addressed in versions 5.15.0.83.80, 6.2.0.32.32
linux-image-lowlatency (Ubuntu package) - addressed in versions 5.15.0.83.85, 6.2.0.1012.12
linux-image-lowlatency-64k (Ubuntu package) - addressed in versions 5.15.0.83.85, 6.2.0.1012.12
linux-image-5.15.0-83-generic (Ubuntu package) - update to 5.15.0-83.92~20.04.1
linux-image-5.15.0-83-generic-64k (Ubuntu package) - update to 5.15.0-83.92~20.04.1
linux-image-5.15.0-83-lowlatency-64k (Ubuntu package) - update to 5.15.0-83.92~20.04.1
linux-image-5.15.0-83-lowlatency (Ubuntu package) - update to 5.15.0-83.92~20.04.1
linux-image-5.15.0-83-generic-lpae (Ubuntu package) - update to 5.15.0-83.92~20.04.1
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.38
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.38
linux-image-generic-hwe-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-generic-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-oem-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-oem-20.04b (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-oem-20.04c (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-oem-20.04d (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-virtual-hwe-20.04 (Ubuntu package) - update to 5.15.0.83.92~20.04.41
linux-image-gkeop-5.15 (Ubuntu package) - addressed in versions 5.15.0.1027.26, 5.15.0.1027.32~20.04.23
linux-image-gkeop (Ubuntu package) - update to 5.15.0.1027.26
linux-image-5.15.0-1027-gkeop (Ubuntu package) - addressed in versions 5.15.0-1027.32, 5.15.0-1027.32~20.04.1
linux-image-nvidia (Ubuntu package) - update to 5.15.0.1032.32
linux-image-nvidia-lowlatency (Ubuntu package) - update to 5.15.0.1032.32
linux-image-5.15.0-1032-nvidia (Ubuntu package) - update to 5.15.0-1032.32
linux-image-5.15.0-1032-nvidia-lowlatency (Ubuntu package) - update to 5.15.0-1032.32
linux-image-ibm (Ubuntu package) - addressed in versions 5.15.0.1037.33, 5.15.0.1037.40~20.04.9, 6.2.0.1009.9
linux-image-raspi (Ubuntu package) - addressed in versions 5.15.0.1037.35, 6.2.0.1012.15
linux-image-raspi-nolpae (Ubuntu package) - addressed in versions 5.15.0.1037.35, 6.2.0.1012.15
linux-image-5.15.0-1037-ibm (Ubuntu package) - addressed in versions 5.15.0-1037.40, 5.15.0-1037.40~20.04.1
linux-image-5.15.0-1037-raspi (Ubuntu package) - update to 5.15.0-1037.40
linux-image-intel-iotg (Ubuntu package) - update to 5.15.0.1039.39
linux-image-5.15.0-1039-intel-iotg (Ubuntu package) - update to 5.15.0-1039.45
linux-image-kvm (Ubuntu package) - addressed in versions 5.15.0.1041.37, 6.2.0.1012.12
linux-image-gcp-lts-22.04 (Ubuntu package) - update to 5.15.0.1041.37
linux-image-gke-5.15 (Ubuntu package) - update to 5.15.0.1041.40
linux-image-gke (Ubuntu package) - update to 5.15.0.1041.40
linux-image-5.15.0-1041-gke (Ubuntu package) - update to 5.15.0-1041.46
linux-image-5.15.0-1041-kvm (Ubuntu package) - update to 5.15.0-1041.46
linux-image-5.15.0-1041-gcp (Ubuntu package) - addressed in versions 5.15.0-1041.49, 5.15.0-1041.49~20.04.1
linux-image-gcp (Ubuntu package) - addressed in versions 5.15.0.1041.49~20.04.1, 6.2.0.1013.13, 6.2.0.1013.13~22.04.1
linux-image-oracle-lts-22.04 (Ubuntu package) - update to 5.15.0.1042.37
linux-image-5.15.0-1042-oracle (Ubuntu package) - addressed in versions 5.15.0-1042.48, 5.15.0-1042.48~20.04.1
linux-image-oracle (Ubuntu package) - addressed in versions 5.15.0.1042.48~20.04.1, 6.2.0.1011.11
linux-image-aws-lts-22.04 (Ubuntu package) - update to 5.15.0.1044.43
linux-image-5.15.0-1044-aws (Ubuntu package) - addressed in versions 5.15.0-1044.49, 5.15.0-1044.49~20.04.1
linux-image-aws (Ubuntu package) - addressed in versions 5.15.0.1044.49~20.04.32, 6.2.0.1011.11~22.04.1, 6.2.0.1011.12
linux-image-azure-lts-22.04 (Ubuntu package) - update to 5.15.0.1046.42
linux-image-5.15.0-1046-azure (Ubuntu package) - addressed in versions 5.15.0-1046.53, 5.15.0-1046.53~20.04.1
linux-image-5.15.0-1046-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1046.53.1, 5.15.0-1046.53~20.04.1.1
linux-image-azure-fde (Ubuntu package) - update to 5.15.0.1046.53~20.04.1.24
linux-image-azure-cvm (Ubuntu package) - update to 5.15.0.1046.53~20.04.35
linux-image-azure (Ubuntu package) - addressed in versions 5.15.0.1046.53~20.04.35, 6.2.0.1011.11
linux-image-azure-fde-lts-22.04 (Ubuntu package) - update to 5.15.0.1046.53.24
linux-image-6.2.0-32-generic (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-lpae (Ubuntu package) - update to 6.2.0-32.32~22.04.1
linux-image-generic-lpae-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-64k-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-oracle (Ubuntu package) - update to 6.2.0-1011.11
linux-image-6.2.0-1011-azure (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-64k-hwe-22.04 (Ubuntu package) - update to 6.2.0.1012.12~22.04.9
linux-image-lowlatency-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

External References

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