SUSE update for the Linux Kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3348 |
| CWE-ID | CWE-416 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Server Operating systems & Components / Operating system kernel-syms-azure Operating systems & Components / Operating system package or component kernel-azure-devel Operating systems & Components / Operating system package or component kernel-azure-debugsource Operating systems & Components / Operating system package or component kernel-azure-debuginfo Operating systems & Components / Operating system package or component kernel-azure-base-debuginfo Operating systems & Components / Operating system package or component kernel-azure-base Operating systems & Components / Operating system package or component kernel-azure Operating systems & Components / Operating system package or component kernel-source-azure Operating systems & Components / Operating system package or component kernel-devel-azure Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU83433
Risk: Low
CVSSv4.0: 4.4 [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-2021-3348
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local authenticated user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nbd_add_socket in drivers/block/nbd.c. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.
MitigationUpdate the affected package the Linux Kernel to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server: 12-SP5
kernel-syms-azure: before 4.12.14-16.47.1
kernel-azure-devel: before 4.12.14-16.47.1
kernel-azure-debugsource: before 4.12.14-16.47.1
kernel-azure-debuginfo: before 4.12.14-16.47.1
kernel-azure-base-debuginfo: before 4.12.14-16.47.1
kernel-azure-base: before 4.12.14-16.47.1
kernel-azure: before 4.12.14-16.47.1
kernel-source-azure: before 4.12.14-16.47.1
kernel-devel-azure: before 4.12.14-16.47.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:kernel-syms-azure:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-azure-devel:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-azure-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-azure-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-azure-base-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-azure-base:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-azure:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-source-azure:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:kernel-devel-azure:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20210739-1/
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.
