Ubuntu update for linux

Published: 2024-02-23

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2023-51781 CVE-2023-6915 CVE-2024-0565 CVE-2024-0646
CWE-ID	CWE-362 CWE-476 CWE-191 CWE-787
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-raspi (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gkeop (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gcp-lts-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-ibm-lts-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-xilinx-zynqmp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi2 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle-lts-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-osp1 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gkeop-5.4 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-bluefield (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws-lts-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-172-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-172-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-172-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1123-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1119-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1118-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1107-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1103-raspi (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1086-gkeop (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1079-bluefield (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1066-ibm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1038-xilinx-zynqmp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1031-iot (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-snapdragon-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-ibm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Race condition

EUVDB-ID: #VU85025

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-51781

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition in the Appletalk subsystem in Linux kernel. A local user can exploit the race and escalate privileges on the system.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

linux-image-raspi (Ubuntu package): before 5.4.0.1103.133

linux-image-gkeop (Ubuntu package): before 5.4.0.1086.84

linux-image-gcp-lts-20.04 (Ubuntu package): before 5.4.0.1123.125

linux-image-ibm-lts-20.04 (Ubuntu package): before 5.4.0.1066.95

linux-image-xilinx-zynqmp (Ubuntu package): before 5.4.0.1038.38

linux-image-virtual (Ubuntu package): before 5.4.0.172.170

linux-image-raspi2 (Ubuntu package): before 5.4.0.1103.133

linux-image-oracle-lts-20.04 (Ubuntu package): before 5.4.0.1118.111

linux-image-oem-osp1 (Ubuntu package): before Ubuntu Pro

linux-image-oem (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-lowlatency (Ubuntu package): before 5.4.0.172.170

linux-image-kvm (Ubuntu package): before 5.4.0.1107.103

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1086.84

linux-image-generic-lpae (Ubuntu package): before 5.4.0.172.170

linux-image-generic (Ubuntu package): before 5.4.0.172.170

linux-image-bluefield (Ubuntu package): before 5.4.0.1079.74

linux-image-aws-lts-20.04 (Ubuntu package): before 5.4.0.1119.116

linux-image-5.4.0-172-lowlatency (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-172-generic-lpae (Ubuntu package): before 5.4.0-172.190

linux-image-5.4.0-172-generic (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1123-gcp (Ubuntu package): before 5.4.0-1123.132

linux-image-5.4.0-1119-aws (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1118-oracle (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1107-kvm (Ubuntu package): before 5.4.0-1107.114

linux-image-5.4.0-1103-raspi (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1086-gkeop (Ubuntu package): before 5.4.0-1086.90

linux-image-5.4.0-1079-bluefield (Ubuntu package): before 5.4.0-1079.85

linux-image-5.4.0-1066-ibm (Ubuntu package): before Ubuntu Pro

linux-image-5.4.0-1038-xilinx-zynqmp (Ubuntu package): before 5.4.0-1038.42

linux-image-5.4.0-1031-iot (Ubuntu package): before 5.4.0-1031.32

linux-image-lowlatency-hwe-18.04 (Ubuntu package): before Ubuntu Pro

linux-image-virtual-hwe-18.04 (Ubuntu package): before Ubuntu Pro

linux-image-snapdragon-hwe-18.04 (Ubuntu package): before Ubuntu Pro

linux-image-generic-hwe-18.04 (Ubuntu package): before Ubuntu Pro

linux-image-raspi-hwe-18.04 (Ubuntu package): before Ubuntu Pro

linux-image-ibm (Ubuntu package): before Ubuntu Pro

linux-image-aws (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-oracle (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6648-1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) NULL pointer dereference

EUVDB-ID: #VU85423

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6915

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the ida_free() function in lib/idr.c. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.