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9.8
CVE-2025-21988: Linux packages on Debian and Ubuntu could be exploited
CVE-2025-21988 · published 1 day ago
Summary
Several Linux packages used in Debian and Ubuntu distributions have a weakness that could let an attacker gain control of a system. The issue has been fixed in newer releases, so updating to the latest version of the affected packages is recommended.
What to do
- Update debian rootio-linux to version 6.12.63-1.root.io.64.
- Update linux kernel to version 6.13.8.
- Update debian linux to version 6.12.101-1.aikido.157.
- Update debian rootio-linux to version 6.12.101-1.aikido.157.
- Update debian linux to version 6.12.105-1.aikido.160.
- Update debian rootio-linux to version 6.12.105-1.aikido.160.
- Update linux to version 6.12.113-1.aikido.163.
- Update rootio-linux to version 6.12.113-1.aikido.163.
- Update linux linux to version 62b9ad7e52d4777f7e775ee1f0ad2452f6041024 or later.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Root:Debian:13 | debian | rootio-linux |
< 6.12.63-1.root.io.64 < 6.12.101-1.aikido.157 < 6.12.105-1.aikido.160 Fix: upgrade to 6.12.63-1.root.io.64
|
| Ubuntu:24.04:LTS | canonical | linux-oem-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-raspi-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-6.17 | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.14 | All versions |
| Ubuntu:Pro:Realtime:24.04:LTS | canonical | linux-realtime-6.17 | All versions |
| Ubuntu:25.10 | canonical | linux | All versions |
| Ubuntu:25.10 | canonical | linux-aws | All versions |
| Ubuntu:25.10 | canonical | linux-azure | All versions |
| Ubuntu:25.10 | canonical | linux-azure-fde | All versions |
| Ubuntu:25.10 | canonical | linux-gcp | All versions |
| Ubuntu:25.10 | canonical | linux-oracle | All versions |
| Ubuntu:25.10 | canonical | linux-raspi | All versions |
| Ubuntu:25.10 | canonical | linux-realtime | All versions |
| Ubuntu:25.10 | canonical | linux-riscv | All versions |
| Ubuntu:26.04 | canonical | linux | All versions |
| Ubuntu:26.04 | canonical | linux-aws | All versions |
| Ubuntu:26.04 | canonical | linux-azure | All versions |
| Ubuntu:26.04 | canonical | linux-azure-fde | All versions |
| Ubuntu:26.04 | canonical | linux-gcp | All versions |
| Ubuntu:26.04 | canonical | linux-ibm | All versions |
| Ubuntu:26.04 | canonical | linux-oracle | All versions |
| Ubuntu:26.04 | canonical | linux-raspi | All versions |
| Ubuntu:26.04 | canonical | linux-realtime | All versions |
| Ubuntu:26.04 | canonical | linux-riscv | All versions |
| – | linux | linux |
< 62b9ad7e52d4777f7e775ee1f0ad2452f6041024 6.12 |
| Linux | linux | kernel |
>= 6.13.0, < 6.13.8 Fix: upgrade to 6.13.8
|
| Ubuntu:24.04:LTS | canonical | linux-aws-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oracle-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-riscv-7.0 | All versions |
| – | linux | linux_kernel |
>= 6.12, < 6.12.20 >= 6.13, < 6.13.8 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Ubuntu:16.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-aws-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-azure-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gcp-5.3 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-4.15 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gke-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-gkeop-5.4 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-hwe | All versions |
Showing 50 of 138. Show the rest
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:18.04:LTS | canonical | linux-hwe-edge | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oem | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.0 | All versions |
| Ubuntu:18.04:LTS | canonical | linux-oracle-5.3 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-aws-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-azure-fde | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gcp-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gke-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop | All versions |
| Ubuntu:20.04:LTS | canonical | linux-gkeop-5.15 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-hwe-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-intel-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.10 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.14 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oem-5.6 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.13 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-oracle-5.8 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-raspi2 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.11 | All versions |
| Ubuntu:20.04:LTS | canonical | linux-riscv-5.8 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-allwinner-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-aws-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-azure-fde-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-gcp-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-intel-iot-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-lowlatency-hwe-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-nvidia-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-5.17 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.0 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.1 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oem-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-oracle-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-realtime | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-riscv-6.5 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-5.19 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.2 | All versions |
| Ubuntu:22.04:LTS | canonical | linux-starfive-6.5 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-aws-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-fde-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-azure-nvidia-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-gcp-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-oem-6.14 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-hwe-7.0 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-6.17 | All versions |
| Ubuntu:24.04:LTS | canonical | linux-nvidia-7.0 | All versions |
| Ubuntu:Nvidia-BlueField:24.04:LTS | canonical | linux-bluefield | All versions |
| Ubuntu:26.04:LTS | canonical | linux-nvidia | All versions |
| Ubuntu:26.04:LTS | canonical | linux-nvidia-bos | All versions |
| Ubuntu:26.04:LTS | canonical | linux-oem-7.0 | All versions |
| Root:Debian:13 | debian | linux |
< 6.12.101-1.aikido.157 < 6.12.105-1.aikido.160 Fix: upgrade to 6.12.101-1.aikido.157
|
| Root:Debian:13 | – | linux |
< 6.12.113-1.aikido.163 Fix: upgrade to 6.12.113-1.aikido.163
|
| Root:Debian:13 | – | rootio-linux |
< 6.12.113-1.aikido.163 Fix: upgrade to 6.12.113-1.aikido.163
|
Original advisory text
CVE-2025-21988 in linux - Patched by Root
Root has patched CVE-2025-21988 in the linux package for Root:Debian:13. Multiple fixed versions available.
References
- https://git.kernel.org/stable/c/e2d46f2ec332533816417b60933954173f602121 Patch
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git Product
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21988... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-21988 Vendor Advisory
- https://git.kernel.org/stable/c/e25cec3b76aba47a49138d2162fc809c6cd49c9e Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2025-21988 Third Party Advisory
- https://ubuntu.com/security/CVE-2025-21988 Third Party Advisory
- https://git.kernel.org/stable/c/62b9ad7e52d4777f7e775ee1f0ad2452f6041024 Patch
- https://git.kernel.org/linus/e25cec3b76aba47a49138d2162fc809c6cd49c9e Third Party Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker partial control (estimated)
Severity
9.8
Critical
Timeline
Published17 Oct 2026
Updated17 Oct 2026
First seen6 Mar 2026
Sources
CVE-2025-21988 · OSV
UBUNTU-CVE-2025-21988 · OSV
CVE-2025-21988 · MITRE
CVE-2025-21988 · NVD
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