Risk | Low |
Patch available | YES |
Number of vulnerabilities | 8 |
CVE-ID | CVE-2021-22600 CVE-2021-39685 CVE-2021-4083 CVE-2021-4155 CVE-2021-4202 CVE-2021-43975 CVE-2022-0330 CVE-2022-22942 |
CWE-ID | CWE-415 CWE-119 CWE-416 CWE-264 CWE-787 |
Exploitation vector | Local |
Public exploit |
Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available. Vulnerability #8 is being exploited in the wild. |
Vulnerable software |
Ubuntu Operating systems & Components / Operating system 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-5.4.0-100-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-5.4.0-100-generic-lpae (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-5.4.0-100-lowlatency (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-generic (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 8 vulnerabilities.
EUVDB-ID: #VU63766
Risk: High
CVSSv4.0: [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:A/U:Amber]
CVE-ID: CVE-2021-22600
CWE-ID:
CWE-415 - Double Free
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the packet_set_ring() function in net/packet/af_packet.c. A local user can pass specially crafted data to the application, trigger double free error and escalate privileges on the system.
Note, the vulnerability is being actively exploited in the wild against Android users.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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?
Yes. This vulnerability is being exploited in the wild.
EUVDB-ID: #VU61095
Risk: Low
CVSSv4.0: [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2021-39685
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: Yes
DescriptionThe vulnerability allows a malicious host to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the USB subsystem in Linux kernel. A malicious USB device can trigger memory corruption and execute arbitrary code on the system.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU61246
Risk: Low
CVSSv4.0: [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:U/U:Clear]
CVE-ID: CVE-2021-4083
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe 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's garbage collection for Unix domain socket file handlers. A local user can call close() and fget() simultaneously and can potentially trigger a race condition, which in turn leads to a use-after-free error and allows privilege escalation.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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: #VU59812
Risk: Low
CVSSv4.0: [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
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: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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: #VU63764
Risk: Low
CVSSv4.0: [CVSS:4.0/AV:P/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-2021-4202
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the nci_request() function in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. A local user can cause a data race problem while the device is getting removed and escalate privileges on the system.
MitigationUpdate the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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: #VU62485
Risk: Low
CVSSv4.0: [CVSS:4.0/AV:P/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-2021-43975
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the hw_atl_utils_fw_rpc_wait() function in drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c in Linux kernel. A local user can attach a specially crafted device to the system, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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: #VU60988
Risk: Low
CVSSv4.0: [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-2022-0330
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a random memory access flaw caused by a missing TLB flush in Linux kernel GPU i915 kernel driver functionality. A local user can execute arbitrary code on the system with elevated privileges.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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: #VU61217
Risk: Low
CVSSv4.0: [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:A/U:Clear]
CVE-ID: CVE-2022-22942
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an error in the vmwgfx driver in Linux kernel. A local unprivileged user can gain access to files opened by other processes on the system through a dangling 'file' pointer.
Exploiting this vulnerability requires an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-lowlatency (Ubuntu package): before 5.4.0.100.104
linux-image-generic-lpae (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-generic (Ubuntu package): before 5.4.0-100.113
linux-image-5.4.0-100-generic-lpae (Ubuntu package): before 5.4.0-100.113
linux-image-oem-osp1 (Ubuntu package): before 5.4.0.100.104
linux-image-5.4.0-100-lowlatency (Ubuntu package): before 5.4.0-100.113
linux-image-oem (Ubuntu package): before 5.4.0.100.104
linux-image-generic (Ubuntu package): before 5.4.0.100.104
linux-image-virtual (Ubuntu package): before 5.4.0.100.104
CPE2.3http://ubuntu.com/security/notices/USN-5294-1
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?
Yes. This vulnerability is being exploited in the wild.