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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 28.6% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-12-02 00:00Z5 YR AGO
- Last updated
- 2024-08-04 15:40Z2 YR AGO
- Reserved
- 2020-09-16
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-401Missing Release of Memory after Effective LifetimeVariant
- Data version
- 5.1
- Document digest
- 623a739a9f3922fc5f3434b7c3b719d76e53d014cd456a6dcb42a1c1dd17ac7e
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1895961
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/11/09/1
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- lists.debian.org[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- lists.debian.org[debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- www.starwindsoftware.comhttps://www.starwindsoftware.com/security/sw-20220802-0003/
07 Fixed in
AlmaLinux 8
- kernel-tools-libs-devel Fixed in 4.18.0-305.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Arch Linux
- linux Fixed in 5.9.7.arch1-1
- linux-hardened Fixed in 5.9.8.a-1
- linux-lts Fixed in 5.4.76-1
- linux-zen Fixed in 5.9.7.zen1-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 8
- kernel-tools-libs-devel Fixed in 4.18.0-305.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- linux Fixed in 5.9.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.9.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.9.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-aws-hwe Fixed in 4.15.0-1093.99~16.04.1
- linux-azure Fixed in 4.15.0-1106.118~16.04.1
- linux-gcp Fixed in 4.15.0-1092.105~16.04.1
- linux-hwe Fixed in 4.15.0-133.137~16.04.1
- linux-hwe-edge No fix yet
- linux-oracle Fixed in 4.15.0-1064.71~16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux Fixed in 4.15.0-135.139
- linux-aws Fixed in 4.15.0-1093.99
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-aws-5.4 Fixed in 5.4.0-1034.35~18.04.1
- linux-azure No fix yet
- linux-azure-4.15 Fixed in 4.15.0-1106.118
- linux-azure-5.3 No fix yet
- linux-azure-5.4 Fixed in 5.4.0-1035.36~18.04.1
- linux-azure-edge No fix yet
- linux-dell300x Fixed in 4.15.0-1011.15
- linux-gcp No fix yet
- linux-gcp-4.15 Fixed in 4.15.0-1092.105
- linux-gcp-5.3 No fix yet
- linux-gcp-5.4 Fixed in 5.4.0-1033.35~18.04.1
- linux-gcp-edge No fix yet
- linux-gke-4.15 Fixed in 4.15.0-1078.83
- linux-gke-5.4 Fixed in 5.4.0-1033.35~18.04.1
- linux-gkeop-5.4 Fixed in 5.4.0-1008.9~18.04.1
- linux-hwe No fix yet
- linux-hwe-5.4 Fixed in 5.4.0-59.65~18.04.1
- linux-hwe-edge No fix yet
- linux-kvm Fixed in 4.15.0-1084.86
- linux-oem No fix yet
- linux-oracle Fixed in 4.15.0-1064.71
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
- linux-oracle-5.4 Fixed in 5.4.0-1034.36~18.04.1
- linux-raspi-5.4 Fixed in 5.4.0-1026.29~18.04.1
- linux-raspi2 Fixed in 4.15.0-1078.83
- linux-snapdragon Fixed in 4.15.0-1095.104
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux Fixed in 5.4.0-59.65
- linux-aws Fixed in 5.4.0-1034.35
- linux-azure Fixed in 5.4.0-1035.36
- linux-gcp Fixed in 5.4.0-1033.35
- linux-hwe-5.8 Fixed in 5.8.0-44.50~20.04.1
- linux-kvm Fixed in 5.4.0-1031.32
- linux-oem-5.6 Fixed in 5.6.0-1048.52
- linux-oracle Fixed in 5.4.0-1034.36
- linux-raspi Fixed in 5.4.0-1026.29
- linux-raspi2 No fix yet
- linux-riscv Fixed in 5.4.0-40.45
- linux-riscv-5.8 Fixed in 5.8.0-17.19~20.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- linux-azure Fixed in 4.15.0-1106.118~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2036.38Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2018.21Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1052.60Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 20.04 LTS
- linux-aws-fips Fixed in 5.4.0-1069.73+fips2Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1073.76+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1067.71~20.04.1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 18.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 20.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.