Ubuntu update for linux

Published: 2022-12-01 | Updated: 2024-06-07

Risk	Medium
Patch available	YES
Number of vulnerabilities	13
CVE-ID	CVE-2022-3239 CVE-2022-3524 CVE-2022-3564 CVE-2022-3565 CVE-2022-3566 CVE-2022-3567 CVE-2022-3594 CVE-2022-3621 CVE-2022-3635 CVE-2022-3649 CVE-2022-40768 CVE-2022-42703 CVE-2022-43750
CWE-ID	CWE-416 CWE-401 CWE-119 CWE-362 CWE-532 CWE-476 CWE-284 CWE-787
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #12 is available.
Vulnerable software	Ubuntu Operating systems & Components / Operating system linux-image-virtual-lts-xenial (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-lts-xenial (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lts-xenial (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1114-aws (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-4.4.0-235-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 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-235-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1152-aws (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-4.4.0-1115-kvm (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 13 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU68337

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-2022-3239

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 Linux kernel video4linux driver in the way user triggers em28xx_usb_probe() for the Empia 28xx based TV cards. A local user can 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: 14.04 - 16.04

linux-image-virtual-lts-xenial (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-lowlatency-lts-xenial (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-generic-lts-xenial (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-4.4.0-1114-aws (Ubuntu package): before Ubuntu Pro (Infra-only)

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

linux-image-4.4.0-235-lowlatency (Ubuntu package): before Ubuntu Pro (Infra-only)

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

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

linux-image-4.4.0-235-generic (Ubuntu package): before Ubuntu Pro (Infra-only)

linux-image-4.4.0-1152-aws (Ubuntu package): before Ubuntu Pro (Infra-only)

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

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

linux-image-4.4.0-1115-kvm (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3

External links

https://ubuntu.com/security/notices/USN-5758-1

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) Memory leak

EUVDB-ID: #VU69756

Risk: Medium

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-3524

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the ipv6_renew_options() function when retrieving a new IPv6 address from a malicious DHCP server. A remote attacker can force the system to leak memory and perform denial of service attack.