This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2025-21926 →
Unrated
Vulnerability in linux-hwe-edge
UBUNTU-CVE-2025-21926
First seen on SecPulse
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as UBUNTU-CVE-2025-21926 has been found in linux-hwe-edge.
Risk of unauthorized operations or information disclosure.
What to do: upgrade linux-hwe-edge to 5.4.0-1146.156~18.04.1 or later.
If unsure, ask your IT team or search "linux-hwe-edge UBUNTU-CVE-2025-21926" on the vendor's site.
UBUNTU-CVE-2025-21926 (linux-hwe-edge)
Attack vector: local / no user interaction
Patched: 5.4.0-1146.156~18.04.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
What is the problem
A vulnerability (unclassified) exists in linux-hwe-edge.
Affected scope
Check the vendor advisory for the affected versions of linux-hwe-edge.
Severity
Severity: ?. Risk of unauthorized operations or information disclosure.
How to fix
Update to 5.4.0-1146.156~18.04.1.
Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'linux-hwe-edge' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
grep -r 'linux-hwe-edge' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
linux-hwe-edgeを grep し、稼働しているサービス・バージョンを把握する。 -
2
Apply patchpatch
Upgrade linux-hwe-edge to 5.4.0-1146.156~18.04.1ステージング環境で 5.4.0-1146.156~18.04.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| Ubuntu:16.04:LTS | linux-hwe-edge |
All versions |
— |
| Ubuntu:18.04:LTS | linux-aws-5.0 |
All versions |
— |
| Ubuntu:18.04:LTS | linux-aws-5.3 |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-aws-5.4 |
< 5.4.0-1146.156~18.04.1 |
5.4.0-1146.156~18.04.1 |
| Ubuntu:18.04:LTS | linux-azure |
All versions |
— |
| Ubuntu:18.04:LTS | linux-azure-5.3 |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-azure-5.4 |
< 5.4.0-1151.158~18.04.1 |
5.4.0-1151.158~18.04.1 |
| Ubuntu:18.04:LTS | linux-azure-edge |
All versions |
— |
| Ubuntu:18.04:LTS | linux-gcp |
All versions |
— |
| Ubuntu:18.04:LTS | linux-gcp-5.3 |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-gcp-5.4 |
< 5.4.0-1149.158~18.04.1 |
5.4.0-1149.158~18.04.1 |
| Ubuntu:18.04:LTS | linux-gke-4.15 |
All versions |
— |
| Ubuntu:18.04:LTS | linux-gke-5.4 |
All versions |
— |
| Ubuntu:18.04:LTS | linux-gkeop-5.4 |
All versions |
— |
| Ubuntu:18.04:LTS | linux-hwe |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-hwe-5.4 |
< 5.4.0-216.236~18.04.1 |
5.4.0-216.236~18.04.1 |
| Ubuntu:18.04:LTS | linux-hwe-edge |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-ibm-5.4 |
< 5.4.0-1092.97~18.04.1 |
5.4.0-1092.97~18.04.1 |
| Ubuntu:18.04:LTS | linux-oem |
All versions |
— |
| Ubuntu:18.04:LTS | linux-oracle-5.0 |
All versions |
— |
| Ubuntu:18.04:LTS | linux-oracle-5.3 |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-oracle-5.4 |
< 5.4.0-1144.154~18.04.1 |
5.4.0-1144.154~18.04.1 |
| Ubuntu:Pro:18.04:LTS | linux-raspi-5.4 |
< 5.4.0-1129.142~18.04.1 |
5.4.0-1129.142~18.04.1 |
| Ubuntu:20.04:LTS | linux |
< 5.4.0-216.236 |
5.4.0-216.236 |
| Ubuntu:20.04:LTS | linux-aws |
< 5.4.0-1146.156 |
5.4.0-1146.156 |
| Ubuntu:20.04:LTS | linux-aws-5.15 |
< 5.15.0-1084.91~20.04.1 |
5.15.0-1084.91~20.04.1 |
| Ubuntu:20.04:LTS | linux-azure |
< 5.4.0-1151.158 |
5.4.0-1151.158 |
| Ubuntu:20.04:LTS | linux-azure-5.15 |
< 5.15.0-1089.98~20.04.1 |
5.15.0-1089.98~20.04.1 |
| Ubuntu:20.04:LTS | linux-bluefield |
< 5.4.0-1105.112 |
5.4.0-1105.112 |
| Ubuntu:20.04:LTS | linux-gcp |
< 5.4.0-1149.158 |
5.4.0-1149.158 |
| Ubuntu:20.04:LTS | linux-gcp-5.15 |
< 5.15.0-1083.92~20.04.1 |
5.15.0-1083.92~20.04.1 |
| Ubuntu:20.04:LTS | linux-ibm |
< 5.4.0-1092.97 |
5.4.0-1092.97 |
| Ubuntu:20.04:LTS | linux-ibm-5.15 |
< 5.15.0-1076.79~20.04.1 |
5.15.0-1076.79~20.04.1 |
| Ubuntu:20.04:LTS | linux-intel-iotg-5.15 |
< 5.15.0-1079.85~20.04.1 |
5.15.0-1079.85~20.04.1 |
| Ubuntu:20.04:LTS | linux-kvm |
< 5.4.0-1133.142 |
5.4.0-1133.142 |
| Ubuntu:20.04:LTS | linux-lowlatency-hwe-5.15 |
< 5.15.0-140.150~20.04.1 |
5.15.0-140.150~20.04.1 |
| Ubuntu:20.04:LTS | linux-oracle |
< 5.4.0-1144.154 |
5.4.0-1144.154 |
| Ubuntu:20.04:LTS | linux-oracle-5.15 |
< 5.15.0-1081.87~20.04.1 |
5.15.0-1081.87~20.04.1 |
| Ubuntu:20.04:LTS | linux-raspi |
< 5.4.0-1129.142 |
5.4.0-1129.142 |
| Ubuntu:20.04:LTS | linux-riscv-5.15 |
< 5.15.0-1079.83~20.04.1 |
5.15.0-1079.83~20.04.1 |
| Ubuntu:20.04:LTS | linux-xilinx-zynqmp |
< 5.4.0-1064.68 |
5.4.0-1064.68 |
| Ubuntu:20.04:LTS | linux-aws-5.11 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-aws-5.13 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-aws-5.8 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-azure-5.11 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-azure-5.13 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-azure-5.8 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-azure-fde |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gcp-5.11 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gcp-5.13 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gcp-5.8 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gke |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gke-5.15 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gkeop |
All versions |
— |
| Ubuntu:20.04:LTS | linux-gkeop-5.15 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-hwe-5.11 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-hwe-5.13 |
All versions |
— |
| Ubuntu:Pro:20.04:LTS | linux-hwe-5.15 |
< 5.15.0-142.152~20.04.1 |
5.15.0-142.152~20.04.1 |
| Ubuntu:20.04:LTS | linux-hwe-5.8 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-intel-5.13 |
All versions |
— |
| Ubuntu:Pro:20.04:LTS | linux-iot |
< 5.4.0-1051.54 |
5.4.0-1051.54 |
| Ubuntu:Pro:20.04:LTS | linux-nvidia-tegra-5.15 |
< 5.15.0-1039.39~20.04.1 |
5.15.0-1039.39~20.04.1 |
| Ubuntu:20.04:LTS | linux-oem-5.10 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-oem-5.13 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-oem-5.14 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-oem-5.6 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-oracle-5.11 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-oracle-5.13 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-oracle-5.8 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-raspi2 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-riscv |
All versions |
— |
| Ubuntu:20.04:LTS | linux-riscv-5.11 |
All versions |
— |
| Ubuntu:20.04:LTS | linux-riscv-5.8 |
All versions |
— |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-aws-fips |
< 5.4.0-1146.156+fips1 |
5.4.0-1146.156+fips1 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-azure-fips |
< 5.4.0-1151.158+fips1 |
5.4.0-1151.158+fips1 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-fips |
< 5.4.0-1120.130 |
5.4.0-1120.130 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-gcp-fips |
< 5.4.0-1149.158+fips1 |
5.4.0-1149.158+fips1 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-aws-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-azure-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-gcp-fips |
All versions |
— |
| Ubuntu:22.04:LTS | linux |
< 5.15.0-140.150 |
5.15.0-140.150 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-aws |
< 5.15.0-1084.91 |
5.15.0-1084.91 |
| Ubuntu:22.04:LTS | linux-aws-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-aws-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-aws-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-aws-6.8 |
< 6.8.0-1039.41~22.04.1 |
6.8.0-1039.41~22.04.1 |
| Ubuntu:22.04:LTS | linux-azure |
< 5.15.0-1089.98 |
5.15.0-1089.98 |
| Ubuntu:22.04:LTS | linux-azure-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-azure-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-azure-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-azure-6.8 |
< 6.8.0-1036.42~22.04.1 |
6.8.0-1036.42~22.04.1 |
| Ubuntu:22.04:LTS | linux-azure-fde |
< 5.15.0-1089.98.1 |
5.15.0-1089.98.1 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-gcp |
< 5.15.0-1083.92 |
5.15.0-1083.92 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-gcp-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-gcp-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-gcp-6.8 |
< 6.8.0-1040.42~22.04.1 |
6.8.0-1040.42~22.04.1 |
| Ubuntu:22.04:LTS | linux-gke |
< 5.15.0-1081.87 |
5.15.0-1081.87 |
| Ubuntu:22.04:LTS | linux-gkeop |
< 5.15.0-1066.74 |
5.15.0-1066.74 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-hwe-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-hwe-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-hwe-6.8 |
< 6.8.0-85.85~22.04.1 |
6.8.0-85.85~22.04.1 |
| Ubuntu:22.04:LTS | linux-ibm |
< 5.15.0-1076.79 |
5.15.0-1076.79 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 |
< 6.8.0-1037.37~22.04.1 |
6.8.0-1037.37~22.04.1 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime |
All versions |
— |
| Ubuntu:22.04:LTS | linux-intel-iotg |
< 5.15.0-1079.85 |
5.15.0-1079.85 |
| Ubuntu:22.04:LTS | linux-kvm |
< 5.15.0-1080.85 |
5.15.0-1080.85 |
| Ubuntu:22.04:LTS | linux-lowlatency |
< 5.15.0-140.150 |
5.15.0-140.150 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 |
< 6.8.0-84.84.1~22.04.1 |
6.8.0-84.84.1~22.04.1 |
| Ubuntu:22.04:LTS | linux-nvidia |
< 5.15.0-1078.79 |
5.15.0-1078.79 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 |
< 6.8.0-1039.42~22.04.1 |
6.8.0-1039.42~22.04.1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra |
< 5.15.0-1037.37 |
5.15.0-1037.37 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx |
< 5.15.0-1026.26 |
5.15.0-1026.26 |
| Ubuntu:22.04:LTS | linux-oem-5.17 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-oem-6.0 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-oem-6.1 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-oem-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-oracle |
< 5.15.0-1081.87 |
5.15.0-1081.87 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-oracle-6.8 |
< 6.8.0-1037.38~22.04.1 |
6.8.0-1037.38~22.04.1 |
| Ubuntu:22.04:LTS | linux-raspi |
< 5.15.0-1078.81 |
5.15.0-1078.81 |
| Ubuntu:22.04:LTS | linux-realtime |
All versions |
— |
| Ubuntu:22.04:LTS | linux-riscv |
All versions |
— |
| Ubuntu:22.04:LTS | linux-riscv-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-riscv-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-riscv-6.8 |
< 6.8.0-84.84~22.04.1 |
6.8.0-84.84~22.04.1 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-starfive-6.2 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-starfive-6.5 |
All versions |
— |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp |
< 5.15.0-1050.54 |
5.15.0-1050.54 |
| Ubuntu:Nvidia-BlueField:22.04:LTS | linux-bluefield |
< 5.15.0-1066.68 |
5.15.0-1066.68 |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | linux-aws-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | linux-azure-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | linux-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-preview:22.04:LTS | linux-gcp-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-aws-fips |
< 5.15.0-1084.91+fips1 |
5.15.0-1084.91+fips1 |
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-azure-fips |
< 5.15.0-1089.98+fips1 |
5.15.0-1089.98+fips1 |
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-fips |
< 5.15.0-140.150+fips1 |
5.15.0-140.150+fips1 |
| Ubuntu:Pro:FIPS-updates:22.04:LTS | linux-gcp-fips |
< 5.15.0-1083.92+fips1 |
5.15.0-1083.92+fips1 |
| Ubuntu:Pro:Realtime:22.04:LTS | linux-intel-iot-realtime |
< 5.15.0-1077.79 |
5.15.0-1077.79 |
| Ubuntu:Pro:Realtime:22.04:LTS | linux-realtime |
< 5.15.0-1084.93 |
5.15.0-1084.93 |
| Ubuntu:Pro:Realtime:22.04:LTS | linux-realtime-6.8 |
< 6.8.1-1034.35~22.04.1 |
6.8.1-1034.35~22.04.1 |
| Ubuntu:24.04:LTS | linux |
< 6.8.0-84.84 |
6.8.0-84.84 |
| Ubuntu:24.04:LTS | linux-aws |
< 6.8.0-1039.41 |
6.8.0-1039.41 |
| Ubuntu:24.04:LTS | linux-azure |
< 6.8.0-1038.44 |
6.8.0-1038.44 |
| Ubuntu:24.04:LTS | linux-azure-6.11 |
< 6.11.0-1018.18~24.04.1 |
6.11.0-1018.18~24.04.1 |
| Ubuntu:24.04:LTS | linux-azure-nvidia |
< 6.8.0-1025.27 |
6.8.0-1025.27 |
| Ubuntu:24.04:LTS | linux-gcp |
< 6.8.0-1040.42 |
6.8.0-1040.42 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 |
< 6.11.0-1016.16~24.04.1 |
6.11.0-1016.16~24.04.1 |
| Ubuntu:24.04:LTS | linux-gke |
< 6.8.0-1036.40 |
6.8.0-1036.40 |
| Ubuntu:24.04:LTS | linux-gkeop |
< 6.8.0-1023.25 |
6.8.0-1023.25 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 |
< 6.11.0-28.28~24.04.1 |
6.11.0-28.28~24.04.1 |
| Ubuntu:24.04:LTS | linux-ibm |
< 6.8.0-1037.37 |
6.8.0-1037.37 |
| Ubuntu:24.04:LTS | linux-intel |
All versions |
— |
| Ubuntu:24.04:LTS | linux-lowlatency |
< 6.8.0-84.84.1 |
6.8.0-84.84.1 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 |
< 6.11.0-1015.16~24.04.2 |
6.11.0-1015.16~24.04.2 |
| Ubuntu:24.04:LTS | linux-nvidia |
< 6.8.0-1039.42 |
6.8.0-1039.42 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 |
< 6.11.0-1012.12 |
6.11.0-1012.12 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency |
< 6.8.0-1039.42.1 |
6.8.0-1039.42.1 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra |
< 6.8.0-1010.10 |
6.8.0-1010.10 |
| Ubuntu:24.04:LTS | linux-oem-6.11 |
< 6.11.0-1024.24 |
6.11.0-1024.24 |
| Ubuntu:24.04:LTS | linux-oem-6.8 |
All versions |
— |
| Ubuntu:24.04:LTS | linux-oracle |
< 6.8.0-1037.38 |
6.8.0-1037.38 |
| Ubuntu:24.04:LTS | linux-raspi |
< 6.8.0-1039.43 |
6.8.0-1039.43 |
| Ubuntu:24.04:LTS | linux-raspi-realtime |
All versions |
— |
| Ubuntu:24.04:LTS | linux-realtime |
All versions |
— |
| Ubuntu:24.04:LTS | linux-riscv |
All versions |
— |
| Ubuntu:24.04:LTS | linux-xilinx |
< 6.8.0-1018.19 |
6.8.0-1018.19 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-aws-fips |
< 6.8.0-1039.41+fips1 |
6.8.0-1039.41+fips1 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-azure-fips |
< 6.8.0-1040.46+fips1 |
6.8.0-1040.46+fips1 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-fips |
< 6.8.0-84.84+fips1 |
6.8.0-84.84+fips1 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-gcp-fips |
< 6.8.0-1040.42+fips1 |
6.8.0-1040.42+fips1 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-raspi-realtime |
< 6.8.0-2030.31 |
6.8.0-2030.31 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-realtime |
< 6.8.1-1034.35 |
6.8.1-1034.35 |
| Ubuntu:26.04 | linux-nvidia |
All versions |
— |
| Ubuntu:Nvidia-BlueField:24.04:LTS | linux-bluefield |
All versions |
— |
Original description The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved: net: gso: fix ownership in __udp_gso_segment In __udp_gso_segment the skb destructor is removed before segmenting the skb but the socket reference is kept as-is. This is an issue if the original skb is later orphaned as we can hit the following bug: kernel BUG at ./include/linux/skbuff.h:3312! (skb_orphan) RIP: 0010:ip_rcv_core+0x8b2/0xca0 Call Trace: ip_rcv+0xab/0x6e0 __netif_receive_skb_one_core+0x168/0x1b0 process_backlog+0x384/0x1100 __napi_poll.constprop.0+0xa1/0x370 net_rx_action+0x925/0xe50 The above can happen following a sequence of events when using OpenVSwitch, when an OVS_ACTION_ATTR_USERSPACE action precedes an OVS_ACTION_ATTR_OUTPUT action: 1. OVS_ACTION_ATTR_USERSPACE is handled (in do_execute_actions): the skb goes through queue_gso_packets and then __udp_gso_segment, where its destructor is removed. 2. The segments' data are copied and sent to userspace. 3. OVS_ACTION_ATTR_OUTPUT is handled (in do_execute_actions) and the same original skb is sent to its path. 4. If it later hits skb_orphan, we hit the bug. Fix this by also removing the reference to the socket in __udp_gso_segment.
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- advisory ubuntu.com
- advisory ubuntu.com
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- report ubuntu.com
- report cve.org
- report git.kernel.org