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Vulnerability record · CVE-2020-25704 · published 2 December 2020

CVE-2020-25704: Linux kernel memory leak vulnerability

Linux · Linux Kernel

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.

5.5 CVSS 3.1 Medium EPSS 0.35% · top 73.6% CWE-401 · Memory leak
5.5CVSS 3.1 base score, v2 4.9
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=1895961 Issue TrackingThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2020/11/09/1 Mailing List
https://www.starwindsoftware.com/security/sw-20220802-0003/ Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1895961 Issue TrackingThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00 PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2020/11/09/1 Mailing List
https://www.starwindsoftware.com/security/sw-20220802-0003/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-25704), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.