Ubuntu update for linux

1) Integer overflow

EUVDB-ID: #VU59695

Risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-0185

CWE-ID: CWE-190 - Integer overflow

Exploit availability: Yes

Description

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

The vulnerability exists due to integer overflow in the legacy_parse_param() function in fs/fs_context.c in Linux kernel. A local user can tun a specially crafted program to trigger integer overflow and execute arbitrary code with root privileges.

Mitigation

Update the affected package linux to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

linux-image-5.13.0-1028-oem (Ubuntu package): before 5.13.0-1028.35

linux-image-gcp-lts-20.04 (Ubuntu package): before 5.4.0.1062.72

linux-image-raspi2 (Ubuntu package): before 5.4.0.1050.84

linux-image-5.4.0-1012-ibm (Ubuntu package): before 5.4.0-1012.13

linux-image-5.4.0-96-generic (Ubuntu package): before 5.4.0-96.109~18.04.1

linux-image-5.4.0-1067-azure (Ubuntu package): before 5.4.0-1067.70~18.04.1

linux-image-azure-lts-20.04 (Ubuntu package): before 5.4.0.1067.65

linux-image-aws-lts-20.04 (Ubuntu package): before 5.4.0.1063.65

linux-image-5.4.0-1025-bluefield (Ubuntu package): before 5.4.0-1025.28

linux-image-bluefield (Ubuntu package): before 5.4.0.1025.26

linux-image-oem (Ubuntu package): before 5.4.0.96.109~18.04.84

linux-image-5.4.0-96-lowlatency (Ubuntu package): before 5.4.0-96.109~18.04.1

linux-image-ibm (Ubuntu package): before 5.4.0.1012.13

linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1020.17

linux-image-oem-20.04b (Ubuntu package): before 5.10.0.1057.57

linux-image-oem-20.04c (Ubuntu package): before 5.13.0.1028.30

linux-image-5.4.0-1059-gke (Ubuntu package): before 5.4.0-1059.62~18.04.1

linux-image-gke-5.4 (Ubuntu package): before 5.4.0.1059.69

linux-image-oem-osp1 (Ubuntu package): before 5.4.0.96.109~18.04.84

linux-image-5.4.0-1062-gcp (Ubuntu package): before 5.4.0-1062.66~18.04.1

linux-image-5.4.0-1061-oracle (Ubuntu package): before 5.4.0-1061.65~18.04.1

linux-image-oracle-lts-20.04 (Ubuntu package): before 5.4.0.1061.61

linux-image-5.4.0-1031-gkeop (Ubuntu package): before 5.4.0-1031.32~18.04.1

linux-image-5.4.0-96-generic-lpae (Ubuntu package): before 5.4.0-96.109~18.04.1

linux-image-5.4.0-1050-raspi (Ubuntu package): before 5.4.0-1050.56~18.04.1

linux-image-5.10.0-1057-oem (Ubuntu package): before 5.10.0-1057.61

linux-image-gkeop-5.4 (Ubuntu package): before 5.4.0.1031.34

linux-image-ibm-lts-20.04 (Ubuntu package): before 5.4.0.1012.13

linux-image-5.14.0-1020-oem (Ubuntu package): before 5.14.0-1020.22

linux-image-5.4.0-1053-kvm (Ubuntu package): before 5.4.0-1053.55

linux-image-gkeop (Ubuntu package): before 5.4.0.1031.34

linux-image-5.11.0-1028-gcp (Ubuntu package): before 5.11.0-1028.32~20.04.1

linux-image-5.11.0-49-generic (Ubuntu package): before 5.11.0-49.55

linux-image-5.11.0-1027-aws (Ubuntu package): before 5.11.0-1027.30~20.04.1

linux-image-5.11.0-1027-raspi-nolpae (Ubuntu package): before 5.11.0-1027.30

linux-image-5.11.0-49-generic-lpae (Ubuntu package): before 5.11.0-49.55

linux-image-5.11.0-1027-raspi (Ubuntu package): before 5.11.0-1027.30

linux-image-5.11.0-1024-kvm (Ubuntu package): before 5.11.0-1024.27

linux-image-5.11.0-49-lowlatency (Ubuntu package): before 5.11.0-49.55

linux-image-5.11.0-49-generic-64k (Ubuntu package): before 5.11.0-49.55

linux-image-5.11.0-1027-oracle (Ubuntu package): before 5.11.0-1027.30~20.04.1

linux-image-5.11.0-1027-azure (Ubuntu package): before 5.11.0-1027.30~20.04.1

linux-image-lowlatency (Ubuntu package): before 5.13.0.27.37

linux-image-5.13.0-27-generic-64k (Ubuntu package): before 5.13.0-27.29

linux-image-generic-lpae (Ubuntu package): before 5.13.0.27.37

linux-image-5.13.0-1011-aws (Ubuntu package): before 5.13.0-1011.12

linux-image-kvm (Ubuntu package): before 5.13.0.1010.10

linux-image-raspi (Ubuntu package): before 5.13.0.1015.20

linux-image-5.13.0-1015-oracle (Ubuntu package): before 5.13.0-1015.19

linux-image-oracle (Ubuntu package): before 5.13.0.1015.15

linux-image-5.13.0-1015-raspi (Ubuntu package): before 5.13.0-1015.17

linux-image-gcp (Ubuntu package): before 5.13.0.1012.11

linux-image-5.13.0-1010-kvm (Ubuntu package): before 5.13.0-1010.11

linux-image-5.13.0-27-generic (Ubuntu package): before 5.13.0-27.29

linux-image-gke (Ubuntu package): before 5.13.0.1012.11

linux-image-oem-20.04 (Ubuntu package): before 5.13.0.27.37

linux-image-raspi-nolpae (Ubuntu package): before 5.13.0.1015.20

linux-image-azure (Ubuntu package): before 5.13.0.1012.12

linux-image-5.13.0-1012-gcp (Ubuntu package): before 5.13.0-1012.15

linux-image-aws (Ubuntu package): before 5.13.0.1011.12

linux-image-5.13.0-27-lowlatency (Ubuntu package): before 5.13.0-27.29

linux-image-5.13.0-1012-azure (Ubuntu package): before 5.13.0-1012.14

linux-image-generic (Ubuntu package): before 5.13.0.27.37

linux-image-generic-64k (Ubuntu package): before 5.13.0.27.37

linux-image-5.13.0-1015-raspi-nolpae (Ubuntu package): before 5.13.0-1015.17

linux-image-5.13.0-27-generic-lpae (Ubuntu package): before 5.13.0-27.29

linux-image-virtual (Ubuntu package): before 5.13.0.27.37

linux-image-virtual-hwe-18.04 (Ubuntu package): before 5.4.0.96.109~18.04.84

linux-image-snapdragon-hwe-18.04 (Ubuntu package): before 5.4.0.96.109~18.04.84

linux-image-raspi-hwe-18.04 (Ubuntu package): before 5.4.0.1050.52

linux-image-lowlatency-hwe-18.04 (Ubuntu package): before 5.4.0.96.109~18.04.84

linux-image-generic-lpae-hwe-18.04 (Ubuntu package): before 5.4.0.96.109~18.04.84

linux-image-generic-hwe-18.04 (Ubuntu package): before 5.4.0.96.109~18.04.84

External links

http://ubuntu.com/security/notices/USN-5240-1

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.