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This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2025-21694 →
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Vulnerability in linux-hwe-edge

UBUNTU-CVE-2025-21694 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-2025-21694 has been found in linux-hwe-edge.
Risk of unauthorized operations or information disclosure.
What to do: upgrade linux-hwe-edge to 5.4.0-1142.152~18.04.1 or later.
If unsure, ask your IT team or search "linux-hwe-edge UBUNTU-CVE-2025-21694" on the vendor's site.

UBUNTU-CVE-2025-21694 (linux-hwe-edge)
Attack vector: local / no user interaction
Patched: 5.4.0-1142.152~18.04.1 — 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 5.4.0-1142.152~18.04.1.

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. 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. 2
    Apply patchpatch
    Upgrade linux-hwe-edge to 5.4.0-1142.152~18.04.1

    ステージング環境で 5.4.0-1142.152~18.04.1 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. 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

EcosystemPackageAffectedFixed
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
< 5.4.0-1142.152~18.04.1
5.4.0-1142.152~18.04.1
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
< 5.4.0-1147.154~18.04.1
5.4.0-1147.154~18.04.1
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
< 5.4.0-1145.154~18.04.1
5.4.0-1145.154~18.04.1
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
< 5.4.0-211.231~18.04.1
5.4.0-211.231~18.04.1
Ubuntu:18.04:LTS linux-hwe-edge
All versions
—
Ubuntu:Pro:18.04:LTS linux-ibm-5.4
< 5.4.0-1090.95~18.04.1
5.4.0-1090.95~18.04.1
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
< 5.4.0-1140.149~18.04.1
5.4.0-1140.149~18.04.1
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
< 5.4.0-211.231
5.4.0-211.231
Ubuntu:20.04:LTS linux-aws
< 5.4.0-1142.152
5.4.0-1142.152
Ubuntu:20.04:LTS linux-aws-5.15
< 5.15.0-1080.87~20.04.1
5.15.0-1080.87~20.04.1
Ubuntu:20.04:LTS linux-azure
< 5.4.0-1147.154
5.4.0-1147.154
Ubuntu:20.04:LTS linux-azure-5.15
< 5.15.0-1086.95~20.04.1
5.15.0-1086.95~20.04.1
Ubuntu:20.04:LTS linux-bluefield
< 5.4.0-1101.108
5.4.0-1101.108
Ubuntu:20.04:LTS linux-gcp
< 5.4.0-1145.154
5.4.0-1145.154
Ubuntu:20.04:LTS linux-gcp-5.15
< 5.15.0-1081.90~20.04.1
5.15.0-1081.90~20.04.1
Ubuntu:20.04:LTS linux-hwe-5.15
< 5.15.0-136.147~20.04.1
5.15.0-136.147~20.04.1
Ubuntu:20.04:LTS linux-ibm
< 5.4.0-1088.93
5.4.0-1088.93
Ubuntu:20.04:LTS linux-ibm-5.15
< 5.15.0-1074.77~20.04.1
5.15.0-1074.77~20.04.1
Ubuntu:20.04:LTS linux-intel-iotg-5.15
< 5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
Ubuntu:20.04:LTS linux-iot
< 5.4.0-1048.51
5.4.0-1048.51
Ubuntu:20.04:LTS linux-kvm
< 5.4.0-1129.138
5.4.0-1129.138
Ubuntu:20.04:LTS linux-lowlatency-hwe-5.15
< 5.15.0-135.146~20.04.1
5.15.0-135.146~20.04.1
Ubuntu:20.04:LTS linux-oracle
< 5.4.0-1140.150
5.4.0-1140.150
Ubuntu:20.04:LTS linux-oracle-5.15
< 5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
Ubuntu:20.04:LTS linux-raspi
< 5.4.0-1129.142
5.4.0-1129.142
Ubuntu:20.04:LTS linux-riscv-5.15
< 5.15.0-1075.79~20.04.1
5.15.0-1075.79~20.04.1
Ubuntu:20.04:LTS linux-xilinx-zynqmp
< 5.4.0-1060.64
5.4.0-1060.64
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: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-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
< 5.4.0-1142.153+fips1
5.4.0-1142.153+fips1
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-azure-fips
< 5.4.0-1147.154+fips1
5.4.0-1147.154+fips1
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-fips
< 5.4.0-1116.126
5.4.0-1116.126
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-gcp-fips
< 5.4.0-1145.154+fips1
5.4.0-1145.154+fips1
Ubuntu:22.04:LTS linux
< 5.15.0-135.146
5.15.0-135.146
Ubuntu:22.04:LTS linux-allwinner-5.19
All versions
—
Ubuntu:22.04:LTS linux-aws
< 5.15.0-1080.87
5.15.0-1080.87
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
< 6.8.0-1030.32~22.04.1
6.8.0-1030.32~22.04.1
Ubuntu:22.04:LTS linux-azure
< 5.15.0-1084.93
5.15.0-1084.93
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
< 6.8.0-1030.35~22.04.1
6.8.0-1030.35~22.04.1
Ubuntu:22.04:LTS linux-azure-fde
< 5.15.0-1084.93.1
5.15.0-1084.93.1
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
< 5.15.0-1079.88
5.15.0-1079.88
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
< 6.8.0-1031.33~22.04.1
6.8.0-1031.33~22.04.1
Ubuntu:22.04:LTS linux-gke
< 5.15.0-1077.83
5.15.0-1077.83
Ubuntu:22.04:LTS linux-gkeop
< 5.15.0-1062.70
5.15.0-1062.70
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
< 6.8.0-64.67~22.04.1
6.8.0-64.67~22.04.1
Ubuntu:22.04:LTS linux-ibm
< 5.15.0-1072.75
5.15.0-1072.75
Ubuntu:22.04:LTS linux-ibm-6.8
< 6.8.0-1027.27~22.04.1
6.8.0-1027.27~22.04.1
Ubuntu:22.04:LTS linux-intel-iot-realtime
< 5.15.0-1073.75
5.15.0-1073.75
Ubuntu:22.04:LTS linux-intel-iotg
< 5.15.0-1075.81
5.15.0-1075.81
Ubuntu:22.04:LTS linux-kvm
< 5.15.0-1076.81
5.15.0-1076.81
Ubuntu:22.04:LTS linux-lowlatency
< 5.15.0-135.146
5.15.0-135.146
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
< 6.8.0-62.65.1~22.04.1
6.8.0-62.65.1~22.04.1
Ubuntu:22.04:LTS linux-nvidia
< 5.15.0-1074.75
5.15.0-1074.75
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
< 6.8.0-1029.32~22.04.1
6.8.0-1029.32~22.04.1
Ubuntu:22.04:LTS linux-nvidia-tegra
< 5.15.0-1033.33
5.15.0-1033.33
Ubuntu:22.04:LTS linux-nvidia-tegra-igx
< 5.15.0-1021.21
5.15.0-1021.21
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
< 5.15.0-1077.83
5.15.0-1077.83
Ubuntu:22.04:LTS linux-oracle-6.5
All versions
—
Ubuntu:22.04:LTS linux-oracle-6.8
< 6.8.0-1027.28~22.04.1
6.8.0-1027.28~22.04.1
Ubuntu:22.04:LTS linux-raspi
< 5.15.0-1074.77
5.15.0-1074.77
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
< 6.8.0-62.65~22.04.1
6.8.0-62.65~22.04.1
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
< 5.15.0-1044.48
5.15.0-1044.48
Ubuntu:Nvidia-BlueField:22.04:LTS linux-bluefield
< 5.15.0-1062.64
5.15.0-1062.64
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-aws-fips
< 5.15.0-1080.87+fips1
5.15.0-1080.87+fips1
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-azure-fips
< 5.15.0-1083.92+fips1
5.15.0-1083.92+fips1
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-fips
< 5.15.0-135.146+fips1
5.15.0-135.146+fips1
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-gcp-fips
< 5.15.0-1079.88+fips1
5.15.0-1079.88+fips1
Ubuntu:Pro:Realtime:22.04:LTS linux-realtime
< 5.15.0-1080.88
5.15.0-1080.88
Ubuntu:Pro:Realtime:22.04:LTS linux-realtime-6.8
< 6.8.1-1023.24~22.04.1
6.8.1-1023.24~22.04.1
Ubuntu:24.04:LTS linux
< 6.8.0-62.65
6.8.0-62.65
Ubuntu:24.04:LTS linux-aws
< 6.8.0-1030.32
6.8.0-1030.32
Ubuntu:24.04:LTS linux-azure
< 6.8.0-1030.35
6.8.0-1030.35
Ubuntu:24.04:LTS linux-azure-6.11
< 6.11.0-1013.13~24.04.1
6.11.0-1013.13~24.04.1
Ubuntu:24.04:LTS linux-azure-nvidia
< 6.8.0-1018.19
6.8.0-1018.19
Ubuntu:24.04:LTS linux-gcp
< 6.8.0-1031.33
6.8.0-1031.33
Ubuntu:24.04:LTS linux-gcp-6.11
< 6.11.0-1013.13~24.04.1
6.11.0-1013.13~24.04.1
Ubuntu:24.04:LTS linux-gke
< 6.8.0-1026.30
6.8.0-1026.30
Ubuntu:24.04:LTS linux-gkeop
< 6.8.0-1013.15
6.8.0-1013.15
Ubuntu:24.04:LTS linux-hwe-6.11
< 6.11.0-24.24~24.04.1
6.11.0-24.24~24.04.1
Ubuntu:24.04:LTS linux-ibm
< 6.8.0-1027.27
6.8.0-1027.27
Ubuntu:24.04:LTS linux-lowlatency
< 6.8.0-62.65.1
6.8.0-62.65.1
Ubuntu:24.04:LTS linux-lowlatency-hwe-6.11
< 6.11.0-1012.13~24.04.1
6.11.0-1012.13~24.04.1
Ubuntu:24.04:LTS linux-nvidia
< 6.8.0-1029.32
6.8.0-1029.32
Ubuntu:24.04:LTS linux-nvidia-6.11
< 6.11.0-1007.7
6.11.0-1007.7
Ubuntu:24.04:LTS linux-nvidia-lowlatency
< 6.8.0-1029.32.1
6.8.0-1029.32.1
Ubuntu:24.04:LTS linux-nvidia-tegra
< 6.8.0-1008.8
6.8.0-1008.8
Ubuntu:24.04:LTS linux-oem-6.11
< 6.11.0-1020.20
6.11.0-1020.20
Ubuntu:24.04:LTS linux-oem-6.8
< 6.8.0-1029.29
6.8.0-1029.29
Ubuntu:24.04:LTS linux-oracle
< 6.8.0-1027.28
6.8.0-1027.28
Ubuntu:24.04:LTS linux-raspi
< 6.8.0-1029.33
6.8.0-1029.33
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:Realtime:24.04:LTS linux-raspi-realtime
< 6.8.0-2024.25
6.8.0-2024.25
Ubuntu:Pro:Realtime:24.04:LTS linux-realtime
< 6.8.1-1023.24
6.8.1-1023.24
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: fs/proc: fix softlockup in __read_vmcore (part 2) Since commit 5cbcb62dddf5 ("fs/proc: fix softlockup in __read_vmcore") the number of softlockups in __read_vmcore at kdump time have gone down, but they still happen sometimes. In a memory constrained environment like the kdump image, a softlockup is not just a harmless message, but it can interfere with things like RCU freeing memory, causing the crashdump to get stuck. The second loop in __read_vmcore has a lot more opportunities for natural sleep points, like scheduling out while waiting for a data write to happen, but apparently that is not always enough. Add a cond_resched() to the second loop in __read_vmcore to (hopefully) get rid of the softlockups.

Source: OSV.dev (Open Source Vulnerabilities) OSV

References

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