Description
A memory leak in the crypto_reportstat() function in drivers/virt/vboxguest/vboxguest_utils.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering copy_form_user() failures, aka CID-e0b0cb938864.
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 | 5.3.9-1 | — |
| Debian 13 | linux | 5.3.9-1 | — |
| Debian 12 | linux | 5.3.9-1 | — |
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 | 5.0.0-1023.26~18.04.1 | 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 | 5.3.0-1008.9~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1028.29~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | 5.3.0-1009.10~18.04.1 | USN-4208-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +2 | No fix yet | — |
| 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 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1033.38 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1009.14~18.04.1 | USN-4226-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Advisories 3
- 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
- USN-4208-1 linux, linux-aws, linux-gcp, linux-gcp-5.3, linux-kvm, linux-oracle 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