Improper locking in Linux kernel efivarfs
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-52681 |
| CWE-ID | CWE-667 |
| 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.
1) Improper locking
EUVDB-ID: #VU93768
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-2023-52681
CWE-ID:
CWE-667 - Improper Locking
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the efivarfs_init_fs_context() function in fs/efivarfs/super.c. A local user can perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinux kernel: All versions
External linkshttp://git.kernel.org/stable/c/ea6b597fcaca99562fa56a473bcbbbd79b40af03
http://git.kernel.org/stable/c/48be1364dd387e375e1274b76af986cb8747be2c
http://git.kernel.org/stable/c/92be3095c6ca1cdc46237839c6087555be9160e3
http://git.kernel.org/stable/c/547713d502f7b4b8efccd409cff84d731a23853b
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.
