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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | kernel 5.10-rc3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.9.6-1 | — |
| Debian 13 | linux | 5.9.6-1 | — |
| Debian 12 | linux | 5.9.6-1 | — |
| Debian 9 | linux | 4.9.246-1 | DLA-2494-1 |
| Debian 9 | linux-4.19 | 4.19.160-2~deb9u1 | DLA-2483-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-59.65 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1034.35 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1035.36 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1033.35 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-44.50~20.04.1 | USN-4751-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1031.32 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1048.52 | USN-4752-1 |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1034.36 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1026.29 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-raspi2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv | 5.4.0-40.45 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | 5.8.0-17.19~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-135.139 | USN-4710-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1093.99 | USN-4711-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1034.35~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1106.118 | USN-4711-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1035.36~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1011.15 | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1092.105 | USN-4711-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 +1 | 5.4.0-1033.35~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1008.9~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-59.65~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1084.86 | USN-4711-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1064.71 | USN-4711-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1034.36~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1026.29~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-raspi2 +1 | 4.15.0-1078.83 | USN-4711-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1095.104 | USN-4711-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1093.99~16.04.1 | USN-4711-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1106.118~16.04.1 | USN-4711-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1092.105~16.04.1 | USN-4711-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-133.137~16.04.1 | USN-4710-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1064.71~16.04.1 | USN-4711-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2036.38 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2018.21 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1052.60 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1106.118~14.04.1 | USN-4711-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-305.rt7.72.el8 | RHSA-2021:1739 |
| RHEL 8 | perf +26 | 4.18.0-305.el8 | RHSA-2021:1578 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1160.53.1.rt56.1193.el7 | RHSA-2022:0065 |
| RHEL 7 | perf +18 | 3.10.0-1160.53.1.el7 | RHSA-2022:0063 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.2 EUS | kernel-rt +12 | 4.18.0-193.60.2.rt13.112.el8_2 | RHSA-2021:2719 |
| RHEL 8.2 EUS | perf +26 | 4.18.0-193.60.2.el8_2 | RHSA-2021:2718 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-tools-libs-devel | 4.18.0-305.el8 | ALSA-2021:1578 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.29.1 | SUSE-SU-2020:3713-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.43.2.9.17.3 | SUSE-SU-2020:3748-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.43.2 | SUSE-SU-2020:3748-1 |
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.52.1 | SUSE-SU-2020:3484-1 |
| SLES 15 SP1 | kernel-docs | 4.12.14-197.72.2 | SUSE-SU-2020:3507-1 |
| SLES 15 SP1 | kernel-syms +4 | 4.12.14-197.72.1 | SUSE-SU-2020:3507-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.38.1 | SUSE-SU-2020:3715-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.54.1 | SUSE-SU-2020:3717-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.38.1 | SUSE-SU-2020:3715-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.54.1 | SUSE-SU-2020:3717-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.22.1 | SUSE-SU-2020:3512-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.43.2 | SUSE-SU-2020:3748-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_8 | 1-5.3.3 | SUSE-SU-2020:3748-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.72.1 | SUSE-SU-2020:3507-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_19 | 1-3.3.1 | SUSE-SU-2020:3507-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_21 | 1-1.5.1 | SUSE-SU-2020:3532-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.54.1 | SUSE-SU-2020:3717-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_13 | 1-8.3.1 | SUSE-SU-2020:3717-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_17 | 1-6.5.1 | SUSE-SU-2020:3544-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-16.1 | SUSE-SU-2020:3522-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.41.2 | SUSE-SU-2020:3513-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.50.1.lp152.8.10.1 | openSUSE-SU-2020:2260-1, openSUSE-SU-2020:2112-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.50.1 | openSUSE-SU-2020:1906-1 |
| openSUSE Leap 15.2 | kernel-rt +3 | 5.3.18-lp152.3.5.1 | openSUSE-SU-2021:0242-1 |
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.83.1 | openSUSE-SU-2020:2034-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.209-160.335 | 1.0-0.amzn2 | ALAS2-2020-1566 |
| Amazon Linux 2 | perf +8 | 4.14.209-160.335.amzn2 | ALAS2-2020-1566 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-305.el8 | ELSA-2021-1578 |
| Oracle Linux 7 | kernel-uek +8 | 4.14.35-2025.403.3.el7uek | ELSA-2020-5996, ELSA-2020-5995 |
| Oracle Linux 7 | perf +12 | 3.10.0-1160.53.1.el7 | ELSA-2022-0063, ELSA-2020-5996, ELSA-2020-5995 |
Advisories 37
- ALSA-2021:1578 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:2718 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 14, 2026
- RHSA-2021:2719 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 14, 2026
- RHSA-2021:1739 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- RHSA-2021:1578 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- RHSA-2022:0065 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2022:0063 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-4752-1 linux-oem-5.6 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4751-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4679-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4711-1 linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4710-1 linux, linux-hwe vulnerability Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-2494-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2483-1 linux-4.19 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2020:2260-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0242-1 Security update for RT kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3484-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3717-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3522-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3544-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3513-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3507-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3532-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3512-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2034-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1906-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3713-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3748-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3715-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2112-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2022-0515 IBM Spectrum Protect: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 8, 2023
- WID-SEC-2022-0676 Juniper Junos Space: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 11, 2023
- ELSA-2022-0063 Moderate: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 11, 2022
- ELSA-2021-1578 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 25, 2021
- ELSA-2020-5996 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 15, 2020
- ELSA-2020-5995 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 14, 2020
- ALAS2-2020-1566 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 8, 2020
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1895961
- https://www.openwall.com/lists/oss-security/2020/11/09/1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update mailing-list
- [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update mailing-list
- https://www.starwindsoftware.com/security/sw-20220802-0003/