Description
A memory leak in the mlx5_fpga_conn_create_cq() function in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c in the Linux kernel before 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7.
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 | 5.3.15-1 | — |
| Debian 13 | linux | 5.3.15-1 | — |
| Debian 12 | linux | 5.3.15-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-74.84 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1057.59 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-aws-5.0 | 5.0.0-1023.26~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1028.30~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-azure-5.3 | 5.3.0-1009.10~18.04.1 | USN-4225-1 |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1028.29~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | 5.3.0-1010.11~18.04.1 | USN-4225-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1050.53 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1027.28~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.3.0-26.28~18.04.1 | USN-4225-2 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1052.52 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1066.76 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1033.38 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1031.34 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1009.14~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1053.57 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1070.77 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1057.59~16.04.1 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1066.71 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1052.56 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-74.83~16.04.1 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1031.34~16.04.1 | USN-4227-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1066.71~14.04.1 | USN-4227-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-193.rt13.51.el8 | RHSA-2020:1567 |
| RHEL 8 | perf +26 | 4.18.0-193.el8 | RHSA-2020:1769 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.27.1 | SUSE-SU-2020:0511-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.34.1 | SUSE-SU-2020:0560-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.10.1 | SUSE-SU-2020:0558-1 |
| SLES 12 SP5 | kernel-docs | 4.12.14-122.17.2 | SUSE-SU-2020:0580-1 |
| SLES 12 SP5 | kernel-syms +3 | 4.12.14-122.17.1 | SUSE-SU-2020:0580-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.37.1 | SUSE-SU-2020:0559-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.48.1 | SUSE-SU-2020:0584-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.10.1 | SUSE-SU-2020:0558-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.17.1 | SUSE-SU-2020:0580-1 |
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.37.1 | SUSE-SU-2020:0559-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.48.1 | SUSE-SU-2020:0584-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-6.3.1 | SUSE-SU-2020:0605-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.12.1 | SUSE-SU-2020:0599-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.34.1 | SUSE-SU-2020:0560-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_9 | 1-3.5.1 | SUSE-SU-2020:0560-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_18 | 1-1.5.1 | SUSE-SU-2020:1663-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.17.1 | SUSE-SU-2020:0580-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_3 | 1-8.5.1 | SUSE-SU-2020:0580-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.48.1 | SUSE-SU-2020:0584-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_12 | 1-6.3.1 | SUSE-SU-2020:0584-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.17.1 | SUSE-SU-2020:0613-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.40.1 | openSUSE-SU-2020:0336-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +10 | 4.14.35-1902.303.4.1.el7uek | ELSA-2020-5715 |
Advisories 20
- USN-4226-1 linux, linux-aws, linux-aws-5.0, linux-azure, linux-gcp, linux-gke-5.0, linux-kvm, linux-oem-osp1, linux-oracle, linux-oracle-5.0, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- RHSA-2020:1769 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 22, 2026
- RHSA-2020:1567 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- USN-4225-2 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4225-1 linux, linux-aws, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-kvm, linux-oracle, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4227-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4227-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- SUSE-SU-2020:0599-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0584-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0559-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0580-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0336-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0560-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0558-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1663-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0511-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0198 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Dec 9, 2025
- SUSE-SU-2020:0605-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2020:0613-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-5715 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 9, 2020
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
- https://github.com/torvalds/linux/commit/c8c2a057fdc7de1cd16f4baa51425b932a42eb39
- https://security.netapp.com/advisory/ntap-20191205-0001/
- USN-4227-1 vendor-advisory
- USN-4226-1 vendor-advisory
- USN-4225-1 vendor-advisory
- USN-4227-2 vendor-advisory
- USN-4225-2 vendor-advisory
- openSUSE-SU-2020:0336 vendor-advisory