Vulnerability identifier: #VU55258
Vulnerability 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:
CWE-ID:
CWE-401
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the Linux kernel performance monitoring subsystem when using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 5.10 rc1 - 5.10 rc2
External links
http://bugzilla.redhat.com/show_bug.cgi?id=1895961
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
http://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
http://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
http://www.openwall.com/lists/oss-security/2020/11/09/1
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.