Ubuntu update for linux

Published: 2022-03-31 | Updated: 2023-04-11

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-1055 CVE-2022-27666
CWE-ID	CWE-416 CWE-122
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-5.4.0-1071-aws (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-oracle-lts-20.04 (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-oem-osp1 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-107-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1074-azure (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-5.4.0-1069-oracle (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-azure-lts-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-1061-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-107-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-107-generic-lpae (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-oem (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-lowlatency (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-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-1025-oracle (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-gcp (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-oem-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-39-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-39-generic-64k (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-1020-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-39-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-39-generic-lpae (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-generic (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-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-1023-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.13.0-1021-aws (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-lowlatency-hwe-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae-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
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU61765

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-2022-1055

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the tc_new_tfilter in Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

linux-image-5.4.0-1071-aws (Ubuntu package): before 5.4.0-1071.76

linux-image-generic-lpae-hwe-20.04 (Ubuntu package): before 5.13.0.39.44~20.04.24

linux-image-oracle-lts-20.04 (Ubuntu package): before 5.4.0.1069.69

linux-image-generic-64k-hwe-20.04 (Ubuntu package): before 5.13.0.39.44~20.04.24

linux-image-oem-osp1 (Ubuntu package): before 5.4.0.107.111

linux-image-5.4.0-107-generic (Ubuntu package): before 5.4.0-107.121~18.04.1

linux-image-5.4.0-1074-azure (Ubuntu package): before 5.4.0-1074.77

linux-image-aws-lts-20.04 (Ubuntu package): before 5.4.0.1071.73

linux-image-5.4.0-1069-oracle (Ubuntu package): before 5.4.0-1069.75~18.04.1

linux-image-generic-hwe-20.04 (Ubuntu package): before 5.13.0.39.44~20.04.24

linux-image-azure-lts-20.04 (Ubuntu package): before 5.4.0.1074.72

linux-image-5.4.0-1061-kvm (Ubuntu package): before 5.4.0-1061.64

linux-image-5.4.0-107-lowlatency (Ubuntu package): before 5.4.0-107.121~18.04.1

linux-image-5.4.0-107-generic-lpae (Ubuntu package): before 5.4.0-107.121~18.04.1

linux-image-lowlatency-hwe-20.04 (Ubuntu package): before 5.13.0.39.44~20.04.24

linux-image-oem (Ubuntu package): before 5.4.0.107.111

linux-image-virtual-hwe-20.04 (Ubuntu package): before 5.13.0.39.44~20.04.24

linux-image-lowlatency (Ubuntu package): before 5.4.0.107.111

linux-image-generic-lpae (Ubuntu package): before 5.4.0.107.111

linux-image-kvm (Ubuntu package): before 5.4.0.1061.60

linux-image-5.13.0-1025-oracle (Ubuntu package): before 5.13.0-1025.30

linux-image-oracle (Ubuntu package): before 5.4.0.1069.75~18.04.48

linux-image-gcp (Ubuntu package): before 5.13.0.1023.21

linux-image-gke (Ubuntu package): before 5.13.0.1023.21

linux-image-oem-20.04 (Ubuntu package): before 5.13.0.39.48

linux-image-5.13.0-39-lowlatency (Ubuntu package): before 5.13.0-39.44~20.04.1

linux-image-5.13.0-39-generic-64k (Ubuntu package): before 5.13.0-39.44~20.04.1

linux-image-5.13.0-1020-kvm (Ubuntu package): before 5.13.0-1020.21

linux-image-5.13.0-39-generic (Ubuntu package): before 5.13.0-39.44~20.04.1

linux-image-5.13.0-39-generic-lpae (Ubuntu package): before 5.13.0-39.44~20.04.1

linux-image-aws (Ubuntu package): before 5.13.0.1021.22

linux-image-generic (Ubuntu package): before 5.4.0.107.111

linux-image-generic-64k (Ubuntu package): before 5.13.0.39.48

linux-image-virtual (Ubuntu package): before 5.4.0.107.111

linux-image-5.13.0-1023-gcp (Ubuntu package): before 5.13.0-1023.28

linux-image-5.13.0-1021-aws (Ubuntu package): before 5.13.0-1021.23

linux-image-virtual-hwe-18.04 (Ubuntu package): before 5.4.0.107.121~18.04.92

linux-image-snapdragon-hwe-18.04 (Ubuntu package): before 5.4.0.107.121~18.04.92

linux-image-lowlatency-hwe-18.04 (Ubuntu package): before 5.4.0.107.121~18.04.92

linux-image-generic-lpae-hwe-18.04 (Ubuntu package): before 5.4.0.107.121~18.04.92

linux-image-generic-hwe-18.04 (Ubuntu package): before 5.4.0.107.121~18.04.92

CPE2.3

External links

https://ubuntu.com/security/notices/USN-5358-1

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) Heap-based buffer overflow

EUVDB-ID: #VU61672

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-2022-27666

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error within IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c in Linux kernel. A local unprivileged user can pass specially crafted data to the system, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.