Vulnerability Details : CVE-2020-25704

A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.

Vulnerability category: Denial of service

Published 2020-12-02 01:15:13

Updated 2022-10-25 16:30:05

Source Red Hat, Inc.

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-25704

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2020-25704

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	[email protected]
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	[email protected]
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-25704

CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.
Assigned by:
- [email protected] (Secondary)
- [email protected] (Primary)

References for CVE-2020-25704

https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

Mailing List;Third Party Advisory

CVEs referencing this url
https://bugzilla.redhat.com/show_bug.cgi?id=1895961

Issue Tracking;Third Party Advisory
https://www.starwindsoftware.com/security/sw-20220802-0003/

Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html

Mailing List;Third Party Advisory

CVEs referencing this url
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00

Patch;Vendor Advisory
https://www.openwall.com/lists/oss-security/2020/11/09/1

Mailing List

Products affected by CVE-2020-25704

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions up to, including, (<=) 5.9
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel » Version: 5.10 Update RC1
cpe:2.3:o:linux:linux_kernel:5.10:rc1:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel » Version: 5.10 Update RC2
cpe:2.3:o:linux:linux_kernel:5.10:rc2:*:*:*:*:*:*
Matching versions
Starwindsoftware » Command Center » Version: N/A
cpe:2.3:a:starwindsoftware:command_center:-:*:*:*:*:*:*:*
Matching versions
Starwindsoftware » Starwind San & Nas » Version: V8r12
cpe:2.3:a:starwindsoftware:starwind_san_\&_nas:v8r12:*:*:*:*:*:*:*
Matching versions
Starwindsoftware » Starwind Virtual San » Version: V8 Update Build14398
cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14398:*:*:*:*:*:*
Matching versions
Starwindsoftware » Starwind Hyperconverged Appliance » Version: N/A
cpe:2.3:a:starwindsoftware:starwind_hyperconverged_appliance:-:*:*:*:*:*:*:*
Matching versions