Out-of-bounds read in Linux kernel - CVE-2023-38432

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU79478

Out-of-bounds read in Linux kernel - CVE-2023-38432

Published: August 14, 2023


Vulnerability identifier: #VU79478
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-38432
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in fs/smb/server/smb2misc.c in ksmbd. A remote attacker can send specially crafted packets to the system to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.


Affected software

Linux kernel
Slackware Linux
Ubuntu
openEuler
kernel
kernel-headers
perf-debuginfo
kernel-devel
bpftool-debuginfo
kernel-debuginfo
kernel-tools
bpftool
kernel-tools-debuginfo
kernel-source
kernel-tools-devel
perf
python3-perf
python3-perf-debuginfo
kernel-debugsource
linux-image-generic (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-86-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-86-lowlatency (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-86-generic-lpae (Ubuntu package)
linux-image-5.15.0-86-generic-64k (Ubuntu package)
linux-image-5.15.0-86-generic (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-oem-20.04d (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-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-gkeop-5.15 (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-5.15.0-1030-gkeop (Ubuntu package)
linux-image-5.15.0-1037-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-5.15.0-1037-nvidia (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.15.0-1040-raspi (Ubuntu package)
linux-image-5.15.0-1040-ibm (Ubuntu package)
linux-image-5.15.0-1043-intel-iotg (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-gcp-lts-22.04 (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-5.15.0-1044-gke (Ubuntu package)
linux-image-5.15.0-1044-kvm (Ubuntu package)
linux-image-5.15.0-1044-gcp (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-oracle-lts-22.04 (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-5.15.0-1045-oracle (Ubuntu package)
linux-image-aws-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1047-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-azure-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1049-azure-fde (Ubuntu package)
linux-image-5.15.0-1049-azure (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-5.15.139/kernel-generic
linux-5.15.139/kernel-huge
linux-5.15.139/kernel-modules
linux-5.15.139/kernel-headers
linux-image-oem-22.04c (Ubuntu package)
linux-image-6.1.0-1019-oem (Ubuntu package)
linux-image-6.2.0-36-generic (Ubuntu package)
linux-image-6.2.0-36-generic-64k (Ubuntu package)
linux-image-6.2.0-36-generic-lpae (Ubuntu package)
linux-image-virtual-hwe-22.04 (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-6.2.0-1008-starfive (Ubuntu package)
linux-image-starfive (Ubuntu package)
linux-image-6.2.0-1009-starfive (Ubuntu package)
linux-image-6.2.0-1011-nvidia (Ubuntu package)
linux-image-6.2.0-1011-nvidia-64k (Ubuntu package)
linux-image-nvidia-6.2 (Ubuntu package)
linux-image-nvidia-64k-6.2 (Ubuntu package)
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package)
linux-image-nvidia-hwe-22.04 (Ubuntu package)
linux-image-6.2.0-1015-oracle (Ubuntu package)
linux-image-6.2.0-1015-aws (Ubuntu package)
linux-image-6.2.0-1016-kvm (Ubuntu package)
linux-image-6.2.0-1016-lowlatency-64k (Ubuntu package)
linux-image-6.2.0-1016-lowlatency (Ubuntu package)
linux-image-6.2.0-1016-azure (Ubuntu package)
linux-image-6.2.0-1016-azure-fde (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-6.2.0-1016-raspi (Ubuntu package)
linux-image-6.2.0-1018-gcp (Ubuntu package)
linux-image-intel-iotg (Ubuntu package)
linux-image-intel (Ubuntu package)

How to mitigate CVE-2023-38432

Install updates from vendor's website.

Linux kernel - update to 6.3.10
kernel - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-headers - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
perf-debuginfo - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-devel - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
bpftool-debuginfo - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-debuginfo - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-tools - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
bpftool - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-tools-debuginfo - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-source - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-tools-devel - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
perf - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
python3-perf - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
python3-perf-debuginfo - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
kernel-debugsource - addressed in versions 5.10.0-60.109.0.136, 5.10.0-136.47.0.125, 5.10.0-153.25.0.101
linux-image-generic (Ubuntu package) - addressed in versions 5.15.0.86.83, 6.2.0.36.36
linux-image-generic-lpae (Ubuntu package) - addressed in versions 5.15.0.86.83, 6.2.0.36.36
linux-image-generic-64k (Ubuntu package) - addressed in versions 5.15.0.86.83, 6.2.0.36.36
linux-image-virtual (Ubuntu package) - addressed in versions 5.15.0.86.83, 6.2.0.36.36
linux-image-lowlatency (Ubuntu package) - addressed in versions 5.15.0.86.88, 6.2.0.1016.16
linux-image-lowlatency-64k (Ubuntu package) - addressed in versions 5.15.0.86.88, 6.2.0.1016.16
linux-image-5.15.0-86-lowlatency-64k (Ubuntu package) - update to 5.15.0-86.95~20.04.1
linux-image-5.15.0-86-lowlatency (Ubuntu package) - update to 5.15.0-86.95~20.04.1
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - update to 5.15.0.86.95~20.04.41
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.86.95~20.04.41
linux-image-5.15.0-86-generic-lpae (Ubuntu package) - addressed in versions 5.15.0-86.96, 5.15.0-86.96~20.04.1
linux-image-5.15.0-86-generic-64k (Ubuntu package) - addressed in versions 5.15.0-86.96, 5.15.0-86.96~20.04.1
linux-image-5.15.0-86-generic (Ubuntu package) - addressed in versions 5.15.0-86.96, 5.15.0-86.96~20.04.1
linux-image-virtual-hwe-20.04 (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-oem-20.04d (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-oem-20.04c (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-oem-20.04b (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-oem-20.04 (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-generic-hwe-20.04 (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-generic-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.86.96~20.04.44
linux-image-gkeop-5.15 (Ubuntu package) - addressed in versions 5.15.0.1030.29, 5.15.0.1030.35~20.04.26
linux-image-gkeop (Ubuntu package) - update to 5.15.0.1030.29
linux-image-5.15.0-1030-gkeop (Ubuntu package) - update to 5.15.0-1030.35~20.04.1
linux-image-5.15.0-1037-nvidia-lowlatency (Ubuntu package) - update to 5.15.0-1037.37
linux-image-nvidia (Ubuntu package) - update to 5.15.0.1037.37
linux-image-nvidia-lowlatency (Ubuntu package) - update to 5.15.0.1037.37
linux-image-5.15.0-1037-nvidia (Ubuntu package) - update to 5.15.0-1037.37
linux-image-ibm (Ubuntu package) - addressed in versions 5.15.0.1040.36, 5.15.0.1040.43~20.04.12
linux-image-raspi-nolpae (Ubuntu package) - addressed in versions 5.15.0.1040.38, 6.2.0.1016.19
linux-image-raspi (Ubuntu package) - addressed in versions 5.15.0.1040.38, 6.2.0.1016.19
linux-image-5.15.0-1040-raspi (Ubuntu package) - update to 5.15.0-1040.43
linux-image-5.15.0-1040-ibm (Ubuntu package) - update to 5.15.0-1040.43~20.04.1
linux-image-intel-iotg (Ubuntu package) - addressed in versions 5.15.0.1043.43, 5.15.0.1043.49~20.04.33
linux-image-5.15.0-1043-intel-iotg (Ubuntu package) - addressed in versions 5.15.0-1043.49, 5.15.0-1043.49~20.04.1
linux-image-intel (Ubuntu package) - update to 5.15.0.1043.49~20.04.33
linux-image-kvm (Ubuntu package) - addressed in versions 5.15.0.1044.40, 6.2.0.1016.16
linux-image-gcp-lts-22.04 (Ubuntu package) - update to 5.15.0.1044.40
linux-image-gke (Ubuntu package) - update to 5.15.0.1044.43
linux-image-gke-5.15 (Ubuntu package) - update to 5.15.0.1044.43
linux-image-5.15.0-1044-gke (Ubuntu package) - update to 5.15.0-1044.49
linux-image-5.15.0-1044-kvm (Ubuntu package) - update to 5.15.0-1044.49
linux-image-5.15.0-1044-gcp (Ubuntu package) - update to 5.15.0-1044.52~20.04.1
linux-image-gcp (Ubuntu package) - addressed in versions 5.15.0.1044.52~20.04.1, 6.2.0.1018.18, 6.2.0.1018.20~22.04.1
linux-image-oracle-lts-22.04 (Ubuntu package) - update to 5.15.0.1045.40
linux-image-oracle (Ubuntu package) - addressed in versions 5.15.0.1045.40, 5.15.0.1045.51~20.04.1, 6.2.0.1015.15
linux-image-5.15.0-1045-oracle (Ubuntu package) - addressed in versions 5.15.0-1045.51, 5.15.0-1045.51~20.04.1
linux-image-aws-lts-22.04 (Ubuntu package) - update to 5.15.0.1047.46
linux-image-5.15.0-1047-aws (Ubuntu package) - update to 5.15.0-1047.52~20.04.1
linux-image-aws (Ubuntu package) - addressed in versions 5.15.0.1047.52~20.04.35, 6.2.0.1015.15~22.04.1, 6.2.0.1015.16
linux-image-azure-lts-22.04 (Ubuntu package) - update to 5.15.0.1049.45
linux-image-5.15.0-1049-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1049.56.1, 5.15.0-1049.56~20.04.1.1
linux-image-5.15.0-1049-azure (Ubuntu package) - update to 5.15.0-1049.56~20.04.1
linux-image-azure-fde (Ubuntu package) - addressed in versions 5.15.0.1049.56~20.04.1.27, 6.2.0.1016.16~22.04.1.13
linux-image-azure-cvm (Ubuntu package) - update to 5.15.0.1049.56~20.04.38
linux-image-azure (Ubuntu package) - addressed in versions 5.15.0.1049.56~20.04.38, 6.2.0.1016.16~22.04.1
linux-image-azure-fde-lts-22.04 (Ubuntu package) - update to 5.15.0.1049.56.27
linux-5.15.139/kernel-generic - update to 5.15.139
linux-5.15.139/kernel-huge - update to 5.15.139
linux-5.15.139/kernel-modules - update to 5.15.139
linux-5.15.139/kernel-headers - update to 5.15.139_smp
linux-image-oem-22.04c (Ubuntu package) - update to 6.1.0.1019.19
linux-image-6.1.0-1019-oem (Ubuntu package) - update to 6.1.0-1019.19
linux-image-6.2.0-36-generic (Ubuntu package) - update to 6.2.0-36.37~22.04.1
linux-image-6.2.0-36-generic-64k (Ubuntu package) - update to 6.2.0-36.37~22.04.1
linux-image-6.2.0-36-generic-lpae (Ubuntu package) - update to 6.2.0-36.37~22.04.1
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 6.2.0.36.37~22.04.14
linux-image-generic-lpae-hwe-22.04 (Ubuntu package) - update to 6.2.0.36.37~22.04.14
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 6.2.0.36.37~22.04.14
linux-image-generic-64k-hwe-22.04 (Ubuntu package) - update to 6.2.0.36.37~22.04.14
linux-image-6.2.0-1008-starfive (Ubuntu package) - update to 6.2.0-1008.9
linux-image-starfive (Ubuntu package) - addressed in versions 6.2.0.1008.11, 6.2.0.1009.10~22.04.2
linux-image-6.2.0-1009-starfive (Ubuntu package) - update to 6.2.0-1009.10~22.04.1
linux-image-6.2.0-1011-nvidia (Ubuntu package) - update to 6.2.0-1011.11
linux-image-6.2.0-1011-nvidia-64k (Ubuntu package) - update to 6.2.0-1011.11
linux-image-nvidia-6.2 (Ubuntu package) - update to 6.2.0.1011.13
linux-image-nvidia-64k-6.2 (Ubuntu package) - update to 6.2.0.1011.13
linux-image-nvidia-64k-hwe-22.04 (Ubuntu package) - update to 6.2.0.1011.13
linux-image-nvidia-hwe-22.04 (Ubuntu package) - update to 6.2.0.1011.13
linux-image-6.2.0-1015-oracle (Ubuntu package) - update to 6.2.0-1015.15
linux-image-6.2.0-1015-aws (Ubuntu package) - update to 6.2.0-1015.15~22.04.1
linux-image-6.2.0-1016-kvm (Ubuntu package) - update to 6.2.0-1016.16
linux-image-6.2.0-1016-lowlatency-64k (Ubuntu package) - update to 6.2.0-1016.16~22.04.1
linux-image-6.2.0-1016-lowlatency (Ubuntu package) - update to 6.2.0-1016.16~22.04.1
linux-image-6.2.0-1016-azure (Ubuntu package) - update to 6.2.0-1016.16~22.04.1
linux-image-6.2.0-1016-azure-fde (Ubuntu package) - update to 6.2.0-1016.16~22.04.1.1
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 6.2.0.1016.16~22.04.13
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 6.2.0.1016.16~22.04.13
linux-image-6.2.0-1016-raspi (Ubuntu package) - update to 6.2.0-1016.18
linux-image-6.2.0-1018-gcp (Ubuntu package) - update to 6.2.0-1018.20~22.04.1

External References

Related Security Bulletins