Risk | Low |
Patch available | YES |
Number of vulnerabilities | 6 |
CVE-ID | CVE-2021-4155 CVE-2022-20566 CVE-2022-41858 CVE-2022-42895 CVE-2023-0045 CVE-2023-23559 |
CWE-ID | CWE-264 CWE-416 CWE-476 CWE-824 CWE-254 CWE-190 |
Exploitation vector | Local |
Public exploit | Public exploit code for vulnerability #5 is available. |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system linux-image-4.4.0-1116-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-237-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1117-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-237-generic (Ubuntu package) Operating systems & Components / Operating system package or component 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-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-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
EUVDB-ID: #VU59812
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-4155
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to the OS kernel does not impose correctly security restrictions. A local user can gain access to sensitive information on the system.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-4.4.0-1116-aws (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-lowlatency (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-1117-kvm (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-generic (Ubuntu package): before Ubuntu Pro
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-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-aws (Ubuntu package): before Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5926-1
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.
EUVDB-ID: #VU72526
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-20566
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the l2cap_chan_put() function in Bluetooth L2CAP implementation. A local application can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-4.4.0-1116-aws (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-lowlatency (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-1117-kvm (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-generic (Ubuntu package): before Ubuntu Pro
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-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-aws (Ubuntu package): before Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5926-1
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.
EUVDB-ID: #VU70467
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-41858
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe 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 sl_tx_timeout() function in drivers/net/slip in Linux kernel. A local user can perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-4.4.0-1116-aws (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-lowlatency (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-1117-kvm (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-generic (Ubuntu package): before Ubuntu Pro
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-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-aws (Ubuntu package): before Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5926-1
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.
EUVDB-ID: #VU69796
Risk: Low
CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-42895
CWE-ID:
CWE-824 - Access of Uninitialized Pointer
Exploit availability: No
DescriptionThe vulnerability allows an attacker to gain access to sensitive information.
The vulnerability exists due to unauthorized access of uninitialized pointer within the l2cap_parse_conf_req() function in net/bluetooth/l2cap_core.c. An attacker with physical proximity to the affected device can gain access to sensitive information.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-4.4.0-1116-aws (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-lowlatency (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-1117-kvm (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-generic (Ubuntu package): before Ubuntu Pro
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-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-aws (Ubuntu package): before Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5926-1
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU72469
Risk: Low
CVSSv3.1: 2.6 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2023-0045
CWE-ID:
CWE-254 - Security Features
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to Linux kernel does not correctly mitigate SMT attacks. A local user can bypass Spectre-BTI user space mitigations and gain access to sensitive information.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-4.4.0-1116-aws (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-lowlatency (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-1117-kvm (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-generic (Ubuntu package): before Ubuntu Pro
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-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-aws (Ubuntu package): before Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5926-1
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.
EUVDB-ID: #VU72468
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-23559
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within the rndis_query_oid() function in drivers/net/wireless/rndis_wlan.c. A local user can trigger an integer overflow and execute arbitrary code with elevated privileges.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-4.4.0-1116-aws (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-lowlatency (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-1117-kvm (Ubuntu package): before Ubuntu Pro
linux-image-4.4.0-237-generic (Ubuntu package): before Ubuntu Pro
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-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-aws (Ubuntu package): before Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package): before Ubuntu Pro (Infra-only)
External linkshttp://ubuntu.com/security/notices/USN-5926-1
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.