Description
A memory leak in the nfp_abm_u32_knode_replace() function in drivers/net/ethernet/netronome/nfp/abm/cls.c in the Linux kernel before 5.3.6 allows attackers to cause a denial of service (memory consumption), aka CID-78beef629fd9. NOTE: This has been argued as not a valid vulnerability. The upstream commit 78beef629fd9 was reverted
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 | 5.3.7-1 | — |
| Debian 13 | linux | 5.3.7-1 | — |
| Debian 12 | linux | 5.3.7-1 | — |
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 +5 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-aws-5.0 | 5.0.0-1022.25~18.04.1 | USN-4209-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1027.29~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1026.27~18.04.1 | USN-4209-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1026.27~18.04.2 | USN-4209-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.0.0-37.40~18.04.1 | USN-4209-1 |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1030.34 | USN-4209-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1008.13~18.04.1 | USN-4209-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | hyperv-daemons | 6.6.35.1-1 | — |
Advisories 2
- USN-4209-1 linux, linux-aws, linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-hwe, linux-kvm, linux-oem-osp1, linux-oracle, linux-oracle-5.0, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- WID-SEC-2023-0198 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Dec 9, 2025
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.6
- https://github.com/torvalds/linux/commit/78beef629fd95be4ed853b2d37b832f766bd96ca
- USN-4209-1 vendor-advisory
- https://security.netapp.com/advisory/ntap-20191205-0001/
- https://git.kernel.org/linus/1d1997db870f4058676439ef7014390ba9e24eb2
- https://lore.kernel.org/lkml/20191204103955.63c4d9af%40cakuba.netronome.com/