Vulnerability in linux-azure
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-2025-21823 has been found in linux-azure.
Risk of unauthorized operations or information disclosure.
What to do: upgrade linux-azure to 5.4.0-1146.156~18.04.1 or later.
If unsure, ask your IT team or search "linux-azure UBUNTU-CVE-2025-21823" on the vendor's site.
UBUNTU-CVE-2025-21823 (linux-azure)
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.
A vulnerability (unclassified) exists in linux-azure.
Check the vendor advisory for the affected versions of linux-azure.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 5.4.0-1146.156~18.04.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'linux-azure' . 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-azure' . | 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-azure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-azure 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:Pro:14.04:LTS | linux-azure |
All versions |
— |
| Ubuntu:Pro:16.04:LTS | linux-aws-hwe |
All versions |
— |
| Ubuntu:Pro:16.04:LTS | linux-azure |
All versions |
— |
| Ubuntu:Pro:16.04:LTS | linux-gcp |
All versions |
— |
| Ubuntu:Pro:16.04:LTS | linux-hwe |
All versions |
— |
| Ubuntu:16.04:LTS | linux-hwe-edge |
All versions |
— |
| Ubuntu:Pro:16.04:LTS | linux-oracle |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-aws |
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:Pro:18.04:LTS | linux-azure-4.15 |
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:Pro:18.04:LTS | linux-gcp-4.15 |
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:Pro:18.04:LTS | linux-kvm |
All versions |
— |
| Ubuntu:18.04:LTS | linux-oem |
All versions |
— |
| Ubuntu:Pro:18.04:LTS | linux-oracle |
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:Pro:FIPS-updates:18.04:LTS | linux-aws-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-azure-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-fips |
All versions |
— |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-gcp-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-aws-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-azure-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-fips |
All versions |
— |
| Ubuntu:Pro:FIPS:18.04:LTS | linux-gcp-fips |
All versions |
— |
| 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 |
< 6.8.0-1035.37~22.04.1 |
6.8.0-1035.37~22.04.1 |
| 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 |
< 6.8.0-1034.39~22.04.1 |
6.8.0-1034.39~22.04.1 |
| 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 |
< 6.8.0-1036.38~22.04.1 |
6.8.0-1036.38~22.04.1 |
| 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 |
< 6.8.0-78.78~22.04.1 |
6.8.0-78.78~22.04.1 |
| Ubuntu:22.04:LTS | linux-ibm |
< 5.15.0-1076.79 |
5.15.0-1076.79 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 |
< 6.8.0-1033.33~22.04.1 |
6.8.0-1033.33~22.04.1 |
| 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 |
< 6.8.0-78.78.1~22.04.1 |
6.8.0-78.78.1~22.04.1 |
| 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 |
< 6.8.0-1035.38~22.04.1 |
6.8.0-1035.38~22.04.1 |
| 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 |
< 6.8.0-1032.33~22.04.1 |
6.8.0-1032.33~22.04.1 |
| 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 |
< 6.8.0-78.78~22.04.1 |
6.8.0-78.78~22.04.1 |
| 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 |
< 6.8.1-1030.31~22.04.1 |
6.8.1-1030.31~22.04.1 |
| Ubuntu:24.04:LTS | linux |
< 6.8.0-78.78 |
6.8.0-78.78 |
| Ubuntu:24.04:LTS | linux-aws |
< 6.8.0-1035.37 |
6.8.0-1035.37 |
| Ubuntu:24.04:LTS | linux-azure |
< 6.8.0-1034.39 |
6.8.0-1034.39 |
| Ubuntu:24.04:LTS | linux-azure-6.11 |
< 6.11.0-1015.15~24.04.1 |
6.11.0-1015.15~24.04.1 |
| Ubuntu:24.04:LTS | linux-azure-nvidia |
< 6.8.0-1022.23 |
6.8.0-1022.23 |
| Ubuntu:24.04:LTS | linux-gcp |
< 6.8.0-1036.38 |
6.8.0-1036.38 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 |
< 6.11.0-1015.15~24.04.1 |
6.11.0-1015.15~24.04.1 |
| Ubuntu:24.04:LTS | linux-gke |
< 6.8.0-1032.36 |
6.8.0-1032.36 |
| Ubuntu:24.04:LTS | linux-gkeop |
< 6.8.0-1019.21 |
6.8.0-1019.21 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 |
< 6.11.0-26.26~24.04.1 |
6.11.0-26.26~24.04.1 |
| Ubuntu:24.04:LTS | linux-ibm |
< 6.8.0-1033.33 |
6.8.0-1033.33 |
| Ubuntu:24.04:LTS | linux-intel |
All versions |
— |
| Ubuntu:24.04:LTS | linux-lowlatency |
< 6.8.0-78.78.1 |
6.8.0-78.78.1 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 |
< 6.11.0-1014.15~24.04.1 |
6.11.0-1014.15~24.04.1 |
| Ubuntu:24.04:LTS | linux-nvidia |
< 6.8.0-1035.38 |
6.8.0-1035.38 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 |
< 6.11.0-1010.10 |
6.11.0-1010.10 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency |
< 6.8.0-1035.38.1 |
6.8.0-1035.38.1 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra |
< 6.8.0-1009.9 |
6.8.0-1009.9 |
| Ubuntu:24.04:LTS | linux-oem-6.11 |
< 6.11.0-1022.22 |
6.11.0-1022.22 |
| Ubuntu:24.04:LTS | linux-oem-6.8 |
All versions |
— |
| Ubuntu:24.04:LTS | linux-oracle |
< 6.8.0-1032.33 |
6.8.0-1032.33 |
| Ubuntu:24.04:LTS | linux-raspi |
< 6.8.0-1035.39 |
6.8.0-1035.39 |
| 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 |
< 6.8.0-1017.18 |
6.8.0-1017.18 |
| Ubuntu:Pro:FIPS-updates:24.04:LTS | linux-fips |
< 6.8.0-78.78+fips1 |
6.8.0-78.78+fips1 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-raspi-realtime |
< 6.8.0-2028.29 |
6.8.0-2028.29 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-realtime |
< 6.8.1-1030.31 |
6.8.1-1030.31 |
| 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: batman-adv: Drop unmanaged ELP metric worker The ELP worker needs to calculate new metric values for all neighbors "reachable" over an interface. Some of the used metric sources require locks which might need to sleep. This sleep is incompatible with the RCU list iterator used for the recorded neighbors. The initial approach to work around of this problem was to queue another work item per neighbor and then run this in a new context. Even when this solved the RCU vs might_sleep() conflict, it has a major problems: Nothing was stopping the work item in case it is not needed anymore - for example because one of the related interfaces was removed or the batman-adv module was unloaded - resulting in potential invalid memory accesses. Directly canceling the metric worker also has various problems: * cancel_work_sync for a to-be-deactivated interface is called with rtnl_lock held. But the code in the ELP metric worker also tries to use rtnl_lock() - which will never return in this case. This also means that cancel_work_sync would never return because it is waiting for the worker to finish. * iterating over the neighbor list for the to-be-deactivated interface is currently done using the RCU specific methods. Which means that it is possible to miss items when iterating over it without the associated spinlock - a behaviour which is acceptable for a periodic metric check but not for a cleanup routine (…
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- advisory ubuntu.com
- report ubuntu.com
- report cve.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org