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.
CVE-2020-25704
Score 5.5 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 5.5; sources differ by 0.0.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.5
- EG Score
- 5.5(medium)
- EPSS
- 27.2%
- KEV
- Not listed
Published
December 2, 2020
Last Modified
November 21, 2024
References (12)
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1895961
- secalert@redhathttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- secalert@redhathttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- secalert@redhathttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- secalert@redhathttps://www.openwall.com/lists/oss-security/2020/11/09/1
- secalert@redhathttps://www.starwindsoftware.com/security/sw-20220802-0003/
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1895961
- af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2020/11/09/1
- af854a3a-2127-422b-91ae-364da2661108https://www.starwindsoftware.com/security/sw-20220802-0003/
Vendor Advisories for CVE-2020-25704(6)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2022:0063Red Hat Product SecurityMedium
Red Hat Security Advisory: kernel security and bug fix update
- RHSA-2022:0065Red Hat Product SecurityMedium
Red Hat Security Advisory: kernel-rt security and bug fix update
- RHSA-2021:2718Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security and bug fix update
- RHSA-2021:2719Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel-rt security and bug fix update
- RHSA-2021:1739Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel-rt security and bug fix update
- RHSA-2021:1578Red Hat Product SecurityHigh
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Patch Availability(11)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-virtual-hwe-20.04-edge (5.8.0.44.49) @ groovy | 2026-05-23 | ubuntu |
| ubuntu | linux-image-virtual-hwe-16.04-edge (4.15.0.133.131) @ xenial | 2026-05-23 | ubuntu |
| ubuntu | linux-image-oem-20.04 (5.6.0.1048.44) @ focal | 2026-05-23 | ubuntu |
| ubuntu | linux-image-virtual-hwe-20.04 (5.4.0.59.62) @ focal | 2026-05-23 | ubuntu |
| ubuntu | linux-image-oracle (4.15.0.1064.52) @ xenial | 2026-05-23 | ubuntu |
| redhat | kernel-rt-0:3.10.0-1160.53.1.rt56.1193.el7 | 2022-01-11 | redhat |
| redhat | kernel-0:3.10.0-1160.53.1.el7 | 2022-01-11 | redhat |
| redhat | kernel-rt-0:4.18.0-193.60.2.rt13.112.el8_2 | 2021-07-20 | redhat |
| redhat | kernel-0:4.18.0-193.60.2.el8_2 | 2021-07-20 | redhat |
| redhat | kernel-rt-0:4.18.0-305.rt7.72.el8 | 2021-05-18 | redhat |
| redhat | kernel-0:4.18.0-305.el8 | 2021-05-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(6)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
- Microsoft MSRCCVE-2020-257042020-12-08
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.
- UbuntuUSN-4679-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-4710-1MEDIUM
Linux kernel vulnerability
- UbuntuUSN-4711-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-4751-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-4752-1MEDIUM
Linux kernel (OEM) vulnerabilities
Data Freshness Timeline
(refreshed 9× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-20 17:04 UTCEPSS rescore
- 2026-07-20 17:04 UTCEPSS rescore
- 2026-07-19 14:28 UTCEPSS rescore
- 2026-07-19 02:26 UTCEPSS rescore
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- 2026-07-18 10:02 UTCEPSS rescore
- 2026-07-16 16:59 UTCEPSS rescore
- 2026-07-15 16:55 UTCEPSS rescore
- 2026-07-15 01:57 UTCEPSS rescore
- 2026-07-13 22:27 UTCEPSS rescore
- 2026-07-13 22:27 UTCEPSS rescore
- 2026-07-13 06:10 UTCEPSS rescore
- 2026-07-13 06:10 UTCEPSS rescore
- 2026-07-12 22:37 UTCOSV refresh
- 2026-07-12 05:44 UTCEPSS rescore
- 2026-07-11 08:25 UTCEPSS rescore
- 2026-07-11 08:25 UTCEPSS rescore
- 2026-07-09 19:07 UTCEPSS rescore
- 2026-07-08 15:12 UTCEPSS rescore
- 2026-07-07 13:43 UTCEPSS rescore
- 2026-07-07 13:43 UTCEPSS rescore
- 2026-07-06 16:25 UTCEPSS rescore
- 2026-07-06 16:25 UTCEPSS rescore
- 2026-07-06 02:21 UTCEPSS rescore
- 2026-07-06 02:21 UTCEPSS rescore
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- 2026-07-05 02:27 UTCEPSS rescore
- 2026-07-04 06:29 UTCEPSS rescore
- 2026-07-04 06:28 UTCEPSS rescore
- 2026-07-01 15:03 UTCEPSS rescore
- 2026-06-30 23:20 UTCEPSS rescore
- 2026-06-30 23:20 UTCEPSS rescore
- 2026-06-29 14:04 UTCEPSS rescore
- 2026-06-28 14:05 UTCEPSS rescore
- 2026-06-28 04:54 UTCEPSS rescore
- 2026-06-28 04:54 UTCEPSS rescore
- 2026-06-27 03:06 UTCEPSS rescore
- 2026-06-25 13:47 UTCEPSS rescore
- 2026-06-24 14:03 UTCEPSS rescore
- 2026-06-24 14:03 UTCEPSS rescore
- 2026-06-24 08:20 UTCOSV refresh
- 2026-06-23 21:31 UTCEPSS rescore
- 2026-06-23 21:31 UTCEPSS rescore
- 2026-06-22 14:23 UTCEPSS rescore
- 2026-06-22 14:23 UTCEPSS rescore
- 2026-06-21 14:54 UTCEPSS rescore
- 2026-06-21 14:54 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-19 19:23 UTCEPSS rescore
- 2026-06-18 17:50 UTCEPSS rescore
- 2026-06-17 17:50 UTCEPSS rescore
- 2026-06-16 17:50 UTCEPSS rescore
- 2026-06-16 17:50 UTCEPSS rescore
- 2026-06-15 17:46 UTCEPSS rescore
- 2026-06-14 23:15 UTCEPSS rescore
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-13 22:58 UTCEPSS rescore
- 2026-06-12 23:10 UTCEPSS rescore
- 2026-06-11 13:58 UTCEPSS rescore
- 2026-06-10 22:16 UTCEPSS rescore
- 2026-06-10 22:16 UTCEPSS rescore
- 2026-06-10 13:20 UTCEPSS rescore
- 2026-06-08 14:15 UTCEPSS rescore
- 2026-06-08 14:15 UTCEPSS rescore
- 2026-06-07 15:23 UTCEPSS rescore
- 2026-06-07 15:23 UTCEPSS rescore
- 2026-06-07 11:59 UTCOSV refresh
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-06 13:45 UTCEPSS rescore
- 2026-06-05 22:45 UTCEPSS rescore
- 2026-06-05 22:45 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-05 06:08 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-04 13:10 UTCEPSS rescore
- 2026-06-02 20:11 UTCEPSS rescore
- 2026-06-02 20:11 UTCEPSS rescore
- 2026-06-01 13:50 UTCEPSS rescore
- 2026-06-01 13:50 UTCEPSS rescore
- 2026-05-31 22:29 UTCEPSS rescore
- 2026-05-31 22:29 UTCEPSS rescore
- 2026-05-31 00:15 UTCEPSS rescore
- 2026-05-31 00:15 UTCEPSS rescore
- 2026-05-29 13:42 UTCEPSS rescore
- 2026-05-28 13:43 UTCEPSS rescore
- 2026-05-28 13:43 UTCEPSS rescore
- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-24 16:48 UTCEPSS rescore
- 2026-05-23 04:45 UTCEG score recompute
- 2026-05-23 04:45 UTCVendor advisory
- 2026-05-23 04:45 UTCGHSA enrichment
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Frequently asked(5)
What is CVE-2020-25704?
When was CVE-2020-25704 disclosed?
Is CVE-2020-25704 actively exploited?
What is the CVSS score of CVE-2020-25704?
How do I remediate CVE-2020-25704?
Dependency Blast Radius
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