Ubuntu update for linux
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-26365 CVE-2022-33740 CVE-2022-33741 |
| CWE-ID | CWE-200 |
| Exploitation vector | Local |
| Public exploit | N/A |
| 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-generic-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-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-4.4.0-1113-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-233-generic (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 linux-image-4.4.0-233-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Information disclosure
EUVDB-ID: #VU65345
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-26365
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend. A local user can gain unauthorized access to sensitive information on the system.
MitigationUpdate the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
linux-image-virtual-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-lowlatency (Ubuntu package): before 4.4.0233.267
linux-image-kvm (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-1113-kvm (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-233-generic (Ubuntu package): before 4.4.0233.267
linux-image-generic (Ubuntu package): before 4.4.0233.267
linux-image-virtual (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-233-lowlatency (Ubuntu package): before 4.4.0233.267
CPE2.3- cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:linux-image-virtual-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-generic-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-lowlatency-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-1113-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-233-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-virtual_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-233-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5579-1
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) Information disclosure
EUVDB-ID: #VU65346
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-33740
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend. A local user can gain unauthorized 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-virtual-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-lowlatency (Ubuntu package): before 4.4.0233.267
linux-image-kvm (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-1113-kvm (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-233-generic (Ubuntu package): before 4.4.0233.267
linux-image-generic (Ubuntu package): before 4.4.0233.267
linux-image-virtual (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-233-lowlatency (Ubuntu package): before 4.4.0233.267
CPE2.3- cpe:2.3:o:canonical:linux-image-virtual-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-generic-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-lowlatency-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-1113-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-233-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-virtual_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-233-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5579-1
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.
3) Information disclosure
EUVDB-ID: #VU65351
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-33741
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend. A local user can gain unauthorized 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-virtual-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-generic-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-lowlatency-lts-xenial (Ubuntu package): before 4.4.0233.267
linux-image-lowlatency (Ubuntu package): before 4.4.0233.267
linux-image-kvm (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-1113-kvm (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-233-generic (Ubuntu package): before 4.4.0233.267
linux-image-generic (Ubuntu package): before 4.4.0233.267
linux-image-virtual (Ubuntu package): before 4.4.0233.267
linux-image-4.4.0-233-lowlatency (Ubuntu package): before 4.4.0233.267
CPE2.3- cpe:2.3:o:canonical:linux-image-virtual-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-generic-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-lowlatency-lts-xenial_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-1113-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-233-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-virtual_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:linux-image-4.4.0-233-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5579-1
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.
