Ubuntu update for linux

Published: 2022-10-20 | Updated: 2022-12-22

Risk	High
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2022-2602 CVE-2022-41674 CVE-2022-42719 CVE-2022-42720 CVE-2022-42721 CVE-2022-42722
CWE-ID	CWE-416 CWE-119 CWE-476
Exploitation vector	Local network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-raspi (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04c (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04b (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04d (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-lowlatency-64k (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-64k-hwe-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae-hwe-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.14.0-1054-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-hwe-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual-hwe-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1017-raspi-nolpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi-nolpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1007-gkeop (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1017-ibm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-52-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1021-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-azure-lts-22.04 (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-lowlatency-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gke (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws-lts-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-52-lowlatency-64k (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-5.15.0-1017-raspi (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-52-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1022-aws (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-lpae-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gkeop-5.15 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1021-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1022-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gke-5.15 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-64k (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1020-kvm (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-generic-64k-hwe-22.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-52-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-1019-gke (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-64k-hwe-22.04 (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-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.15.0-52-generic-64k (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU68423

Risk: Low

CVSSv4.0: 6.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-2602

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error caused by an io_uring request, which is being processed on a registered file. The Unix GC runs and frees the io_uring file descriptor and all the registered file descriptors in a specific order that may allow a local user to win a race and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

linux-image-raspi (Ubuntu package): before 5.15.0.1017.16

linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1054.52

linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1054.52

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1054.52

linux-image-gkeop (Ubuntu package): before 5.15.0.1007.8

linux-image-lowlatency-64k (Ubuntu package): before 5.15.0.52.47

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.15.0.52.58~20.04.20

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.15.0.52.58~20.04.20

linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package): before 5.15.0.52.58~20.04.18

linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1054.52

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.15.0.52.58~20.04.20

linux-image-5.14.0-1054-oem (Ubuntu package): before 5.14.0-1054.61

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.15.0.52.58~20.04.18

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.15.0.52.58~20.04.20

linux-image-virtual-hwe-22.04 (Ubuntu package): before 5.15.0.52.52

linux-image-5.15.0-1017-raspi-nolpae (Ubuntu package): before 5.15.0-1017.19

linux-image-raspi-nolpae (Ubuntu package): before 5.15.0.1017.16

linux-image-5.15.0-1007-gkeop (Ubuntu package): before 5.15.0-1007.10

linux-image-generic-hwe-22.04 (Ubuntu package): before 5.15.0.52.52

linux-image-5.15.0-1017-ibm (Ubuntu package): before 5.15.0-1017.20

linux-image-5.15.0-52-generic (Ubuntu package): before 5.15.0-52.58~20.04.1

linux-image-5.15.0-1021-gcp (Ubuntu package): before 5.15.0-1021.28~20.04.1

linux-image-azure-lts-22.04 (Ubuntu package): before 5.15.0.1022.21

linux-image-generic (Ubuntu package): before 5.15.0.52.52

linux-image-lowlatency-hwe-22.04 (Ubuntu package): before 5.15.0.52.47

linux-image-oracle (Ubuntu package): before 5.15.0.1021.18

linux-image-gke (Ubuntu package): before 5.15.0.1019.20

linux-image-aws-lts-22.04 (Ubuntu package): before 5.15.0.1022.22

linux-image-5.15.0-52-lowlatency-64k (Ubuntu package): before 5.15.0-52.58~20.04.1

linux-image-ibm (Ubuntu package): before 5.15.0.1017.15

linux-image-5.15.0-1017-raspi (Ubuntu package): before 5.15.0-1017.19

linux-image-5.15.0-52-lowlatency (Ubuntu package): before 5.15.0-52.58~20.04.1

linux-image-5.15.0-1022-aws (Ubuntu package): before 5.15.0-1022.26~20.04.1

linux-image-generic-lpae (Ubuntu package): before 5.15.0.52.52

linux-image-generic-lpae-hwe-22.04 (Ubuntu package): before 5.15.0.52.52

linux-image-gkeop-5.15 (Ubuntu package): before 5.15.0.1007.8

linux-image-gcp (Ubuntu package): before 5.15.0.1021.18

linux-image-5.15.0-1021-oracle (Ubuntu package): before 5.15.0-1021.27

linux-image-5.15.0-1022-azure (Ubuntu package): before 5.15.0-1022.27~20.04.1

linux-image-gke-5.15 (Ubuntu package): before 5.15.0.1019.20

linux-image-generic-64k (Ubuntu package): before 5.15.0.52.52

linux-image-5.15.0-1020-kvm (Ubuntu package): before 5.15.0-1020.24

linux-image-lowlatency (Ubuntu package): before 5.15.0.52.47

linux-image-kvm (Ubuntu package): before 5.15.0.1020.18

linux-image-generic-64k-hwe-22.04 (Ubuntu package): before 5.15.0.52.52

linux-image-5.15.0-52-generic-lpae (Ubuntu package): before 5.15.0-52.58~20.04.1

linux-image-5.15.0-1019-gke (Ubuntu package): before 5.15.0-1019.23~20.04.1

linux-image-azure (Ubuntu package): before 5.15.0.1022.21

linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package): before 5.15.0.52.47

linux-image-aws (Ubuntu package): before 5.15.0.1022.22

linux-image-virtual (Ubuntu package): before 5.15.0.52.52

linux-image-5.15.0-52-generic-64k (Ubuntu package): before 5.15.0-52.58~20.04.1

CPE2.3

External links

https://ubuntu.com/security/notices/USN-5692-1

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. However, proof of concept for this vulnerability is available.

2) Buffer overflow

EUVDB-ID: #VU68311

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-41674

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing WLAN frames within the ieee80211_bss_info_update() function in net/mac80211/scan.c in Linux kernel. A remote attacker on the local network can send specially crafted WLAN frames to the affected system, trigger memory corruption and execute arbitrary code on the target system.

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