Out-of-bounds read in Linux kernel - CVE-2023-38430

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Main Vulnerability Database Vulnerabilities #VU79477

Out-of-bounds read in Linux kernel - CVE-2023-38430

Published: August 14, 2023


Vulnerability identifier: #VU79477
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-2023-38430
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 ksmbd when handling SMB request protocol ID. 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
Ubuntu
openEuler
kernel-headers
kernel
kernel-tools-devel
bpftool
kernel-devel
kernel-tools
bpftool-debuginfo
python3-perf-debuginfo
kernel-debuginfo
kernel-debugsource
python3-perf
kernel-tools-debuginfo
perf-debuginfo
perf
kernel-source
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-102-lowlatency (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-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-102-generic-lpae (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-64k (Ubuntu package)
linux-image-5.15.0-102-generic (Ubuntu package)
linux-image-5.15.0-102-lowlatency-64k (Ubuntu package)
linux-image-gkeop-5.15 (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-5.15.0-1040-gkeop (Ubuntu package)
linux-image-5.15.0-1048-nvidia (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-5.15.0-1048-nvidia-lowlatency (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-oracle-lts-22.04 (Ubuntu package)
linux-image-gcp-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1055-oracle (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-5.15.0-1055-gcp (Ubuntu package)
linux-image-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-azure (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-5.15.0-1060-azure (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure-fde-lts-22.04 (Ubuntu package)
linux-image-6.1.0-1019-oem (Ubuntu package)
linux-image-oem-22.04c (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-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-6.2.0-1008-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-2023-38430

Install updates from vendor's website.

Linux kernel - update to 6.3.9
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 - 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-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
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
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
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
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-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
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
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
linux-image-lowlatency-64k (Ubuntu package) - addressed in versions 5.15.0.102.98, 6.2.0.1016.16
linux-image-lowlatency (Ubuntu package) - addressed in versions 5.15.0.102.98, 6.2.0.1016.16
linux-image-generic-64k (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.36.36
linux-image-generic (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.36.36
linux-image-generic-lpae (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.36.36
linux-image-virtual (Ubuntu package) - addressed in versions 5.15.0.102.99, 6.2.0.36.36
linux-image-virtual-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-oem-20.04d (Ubuntu package) - update to 5.15.0.102.112~20.04.1
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-generic-lpae (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-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-gkeop-5.15 (Ubuntu package) - addressed in versions 5.15.0.1040.39, 5.15.0.1040.46~20.04.36
linux-image-gkeop (Ubuntu package) - update to 5.15.0.1040.39
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-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-5.15.0-1048-nvidia-lowlatency (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
linux-image-raspi-nolpae (Ubuntu package) - addressed in versions 5.15.0.1050.48, 6.2.0.1016.19
linux-image-raspi (Ubuntu package) - addressed in versions 5.15.0.1050.48, 6.2.0.1016.19
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, 6.2.0.1016.16
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-oracle-lts-22.04 (Ubuntu package) - update to 5.15.0.1055.51
linux-image-gcp-lts-22.04 (Ubuntu package) - update to 5.15.0.1055.51
linux-image-5.15.0-1055-oracle (Ubuntu package) - update to 5.15.0-1055.61~20.04.1
linux-image-oracle (Ubuntu package) - addressed in versions 5.15.0.1055.61~20.04.1, 6.2.0.1015.15
linux-image-5.15.0-1055-gcp (Ubuntu package) - update to 5.15.0-1055.63~20.04.1
linux-image-gcp (Ubuntu package) - addressed in versions 5.15.0.1055.63~20.04.1, 6.2.0.1018.18, 6.2.0.1018.20~22.04.1
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, 6.2.0.1015.15~22.04.1, 6.2.0.1015.16
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-azure (Ubuntu package) - addressed in versions 5.15.0.1060.69~20.04.1, 6.2.0.1016.16~22.04.1
linux-image-azure-cvm (Ubuntu package) - update to 5.15.0.1060.69~20.04.1
linux-image-5.15.0-1060-azure (Ubuntu package) - update to 5.15.0-1060.69~20.04.1
linux-image-azure-fde (Ubuntu package) - addressed in versions 5.15.0.1060.69~20.04.1.39, 6.2.0.1016.16~22.04.1.13
linux-image-azure-fde-lts-22.04 (Ubuntu package) - update to 5.15.0.1060.69.38
linux-image-6.1.0-1019-oem (Ubuntu package) - update to 6.1.0-1019.19
linux-image-oem-22.04c (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-generic-64k-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-lpae-hwe-22.04 (Ubuntu package) - update to 6.2.0.36.37~22.04.14
linux-image-virtual-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

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