Ubuntu update for linux-oem-5.14
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-3744 CVE-2021-3764 CVE-2021-41864 |
| CWE-ID | CWE-401 CWE-787 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system linux-image-5.14.0-1007-oem (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 |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Memory leak
EUVDB-ID: #VU63813
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-2021-3744
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform DoS attack on the target system.
The vulnerability exists due memory leak in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c. A local user can force the application to leak memory and perform denial of service attack.
MitigationUpdate the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1007-oem (Ubuntu package): before 5.14.0-1007.7
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1007.7
External linkshttp://ubuntu.com/security/notices/USN-5140-1
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: #VU63817
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3764
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak error in the ccp_run_aes_gcm_cmd() function in Linux kernel. A local user can trigger a memory leak error and perform a denial of service (DoS) attack.
MitigationUpdate the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1007-oem (Ubuntu package): before 5.14.0-1007.7
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1007.7
External linkshttp://ubuntu.com/security/notices/USN-5140-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Out-of-bounds write
EUVDB-ID: #VU63855
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-2021-41864
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 when processing untrusted input. A local user can gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information.
MitigationUpdate the affected package linux-oem-5.14 to the latest version.
Vulnerable software versionsUbuntu: 20.04
linux-image-5.14.0-1007-oem (Ubuntu package): before 5.14.0-1007.7
linux-image-oem-20.04d (Ubuntu package): before 5.14.0.1007.7
External linkshttp://ubuntu.com/security/notices/USN-5140-1
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.
