Description
In the Linux kernel, the following vulnerability has been resolved:
kunit: Fix kthread reference
There is a race condition when a kthread finishes after the deadline and
before the call to kthread_stop(), which may lead to use after free.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.18 | 6.1.93 |
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 | 6.8.12-1 | — |
| Debian 13 | linux | 6.8.12-1 | — |
| Debian 12 | linux | 6.1.94-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux | 6.8.0-40.40 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1013.14 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1012.14 | USN-6952-2 |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1012.13 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1008.11 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-ibm +2 | 6.8.0-1010.10 | USN-6955-1, USN-6952-1, USN-6949-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1011.11 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1011.11.1 | USN-6952-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1009.10 | USN-6949-2 |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-40.40.1 | USN-6949-2 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1013.14~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1012.14~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1012.13~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-40.40~22.04.3 | — |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1011.11~22.04.1 | USN-6949-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1010.10~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 +1 | 6.8.0-40.40.1~22.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2008.8 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1006.6 | — |
Advisories 6
- USN-6955-1 linux-oem-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6952-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6952-1 linux-nvidia-lowlatency, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6949-2 linux-lowlatency, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6949-1 linux, linux-aws, linux-gcp, linux-gke, linux-ibm, linux-nvidia, linux-nvidia-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- WID-SEC-2024-1418 Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Sep 8, 2026
References
- https://git.kernel.org/stable/c/1f2ebd3758e1cef6a1f998a1f7ea73310dcb1699
- https://git.kernel.org/stable/c/1ec7ccb4cd4b6f72c2998b07880fa7aaf8dfe1d4
- https://git.kernel.org/stable/c/8f5c841a559ccb700c8d27a3ca645b7a5f59b4f5
- https://git.kernel.org/stable/c/b0b755cb5a5e0d7168c3ab1b3814b0d3cad9f017
- https://git.kernel.org/stable/c/f8aa1b98ce40184521ed95ec26cc115a255183b2