Risk | Low |
Patch available | YES |
Number of vulnerabilities | 4 |
CVE-ID | CVE-2022-1836 CVE-2022-1966 CVE-2022-1972 CVE-2022-21499 |
CWE-ID | CWE-416 CWE-787 CWE-284 |
Exploitation vector | Local |
Public exploit |
Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available. |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system linux-image-5.14.0-1042-oem (Ubuntu package) / linux-image-oem-20.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04d (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04b (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem-20.04c (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
EUVDB-ID: #VU64087
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-2022-1836
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 use-after-free error in the drivers/block/floppy.c in the floppy driver module in the Linux kernel when working with raw_cmd_ioctl and seek_interrupt. A local user can trigger use-after-free to escalate privileges on the system.
Update the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1042-oem (Ubuntu package): before 5.14.0-1042.47
linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1042.38
External linkshttp://ubuntu.com/security/notices/USN-5470-1
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: #VU64070
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-1966
CWE-ID:
CWE-416 - Use After Free
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can trigger use-after-free error to escalate privileges on the system.
MitigationUpdate the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1042-oem (Ubuntu package): before 5.14.0-1042.47
linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1042.38
External linkshttp://ubuntu.com/security/notices/USN-5470-1
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: #VU64073
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-1972
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing untrusted input in the Linux kernel's netfilter subsystem. A local user can trigger out-of-bounds write to escalate privileges on the system.
MitigationUpdate the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1042-oem (Ubuntu package): before 5.14.0-1042.47
linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1042.38
External linkshttp://ubuntu.com/security/notices/USN-5470-1
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: #VU63961
Risk: Low
CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-21499
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to improper access restrictions to the kernel debugger when booted in secure boot environments. A local privileged user can bypass UEFI Secure Boot restrictions.
MitigationUpdate the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1042-oem (Ubuntu package): before 5.14.0-1042.47
linux-image-oem-20.04 (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04b (Ubuntu package): before 5.14.0.1042.38
linux-image-oem-20.04c (Ubuntu package): before 5.14.0.1042.38
External linkshttp://ubuntu.com/security/notices/USN-5470-1
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.