Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-47185 |
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.
EUVDB-ID: #VU91528
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-2021-47185
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 flush_to_ldisc() function in drivers/tty/tty_buffer.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/0380f643f3a7a61b0845cdc738959c2ad5735d61
http://git.kernel.org/stable/c/b1ffc16ec05ae40d82b6e373322d62e9d6b54fbc
http://git.kernel.org/stable/c/4c1623651a0936ee197859824cdae6ebbd04d3ed
http://git.kernel.org/stable/c/4f300f47dbcf9c3d4b2ea76c8554c8f360400725
http://git.kernel.org/stable/c/d491c84df5c469dd9621863b6a770b3428137063
http://git.kernel.org/stable/c/77e9fed33056f2a88eba9dd4d2d5412f0c7d1f41
http://git.kernel.org/stable/c/5c34486f04700f1ba04907231dce0cc2705c2d7d
http://git.kernel.org/stable/c/3968ddcf05fb4b9409cd1859feb06a5b0550a1c1
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.