Improper locking in Linux kernel powerpc kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-47454 |
| 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: #VU92013
Risk: Low
CVSSv3.1: 4.8 [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-2021-47454
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 __cpu_die() function in arch/powerpc/kernel/smp.c. A local user can perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinux kernel: All versions
CPE2.3http://git.kernel.org/stable/c/53770a411559cf7bc0906d1df319cc533d2f4f58
http://git.kernel.org/stable/c/3ea0b497a7a2fff6a4b7090310c9f52c91975934
http://git.kernel.org/stable/c/787252a10d9422f3058df9a4821f389e5326c440
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.
