Out-of-bounds read in Linux kernel - CVE-2023-1194

Vulnerability identifier: #VU92725

CSH Severity: Low

CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-1194

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to read data or crash the application.

An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.

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-generic-hwe-20.04 (Ubuntu package)
linux-image-5.15.0-102-generic (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-5.15.0-102-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-102-generic-64k (Ubuntu package)
linux-image-5.15.0-102-generic-lpae (Ubuntu package)
linux-image-5.15.0-102-lowlatency (Ubuntu package)
linux-image-oem-20.04b (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-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-lowlatency (Ubuntu package)
linux-image-5.15.0-1048-nvidia (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-5.15 (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-5.15.0-1054-kvm (Ubuntu package)
linux-image-5.15.0-1054-gke (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-5.15.0-1060-azure (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure-fde-lts-22.04 (Ubuntu package)
linux-image-intel-iotg (Ubuntu package)
linux-image-intel (Ubuntu package)

Install update from vendor's repository.

linux-image-lowlatency (Ubuntu package) - update to 5.15.0.102.98
linux-image-lowlatency-64k (Ubuntu package) - update to 5.15.0.102.98
linux-image-generic-lpae (Ubuntu package) - update to 5.15.0.102.99
linux-image-generic-64k (Ubuntu package) - update to 5.15.0.102.99
linux-image-generic (Ubuntu package) - update to 5.15.0.102.99
linux-image-virtual (Ubuntu package) - update to 5.15.0.102.99
linux-image-generic-hwe-20.04 (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-generic-64k-hwe-20.04 (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-lowlatency-64k-hwe-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-oem-20.04 (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-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-lpae (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-20.04b (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-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-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-lowlatency (Ubuntu package) - update to 5.15.0-1048.48
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-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) - update to 5.15.0.1050.48
linux-image-raspi (Ubuntu package) - update to 5.15.0.1050.48
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) - update to 5.15.0.1054.50
linux-image-gke-5.15 (Ubuntu package) - update to 5.15.0.1054.53
linux-image-gke (Ubuntu package) - update to 5.15.0.1054.53
linux-image-5.15.0-1054-kvm (Ubuntu package) - update to 5.15.0-1054.59
linux-image-5.15.0-1054-gke (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) - update to 5.15.0.1055.61~20.04.1
linux-image-5.15.0-1055-gcp (Ubuntu package) - update to 5.15.0-1055.63~20.04.1
linux-image-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) - update to 5.15.0.1057.63~20.04.1
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-cvm (Ubuntu package) - update to 5.15.0.1060.69~20.04.1
linux-image-azure (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

• https://bugzilla.redhat.com/show_bug.cgi?id=2154176
• https://www.spinics.net/lists/stable-commits/msg303065.html
• https://access.redhat.com/security/cve/CVE-2023-1194
• https://security.netapp.com/advisory/ntap-20231221-0006/

• Out-of-bounds read in Linux kernel
• Ubuntu update for linux
• Ubuntu update for linux-aws