Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-46923 |
CWE-ID | CWE-401 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Linux kernel Operating systems & Components / Operating system |
Vendor | Linux Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU88213
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-2021-46923
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 within the SYSCALL_DEFINE5() function in fs/namespace.c. A local user can perform a denial of service attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsLinux kernel: All versions
External linkshttp://git.kernel.org/stable/c/47b5d0a7532d39e42a938f81e3904268145c341d
http://git.kernel.org/stable/c/012e332286e2bb9f6ac77d195f17e74b2963d663
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.