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This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2025-38261 →
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Vulnerability in linux

UBUNTU-CVE-2025-38261 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-2025-38261 has been found in linux.
Risk of unauthorized operations or information disclosure.
What to do: upgrade linux to 6.14.0-1015.15~24.04.1 or later.
If unsure, ask your IT team or search "linux UBUNTU-CVE-2025-38261" on the vendor's site.

UBUNTU-CVE-2025-38261 (linux)
Attack vector: local / no user interaction
Patched: 6.14.0-1015.15~24.04.1 — 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.

Affected scope

Check the vendor advisory for the affected versions of linux.

Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

How to fix

Update to 6.14.0-1015.15~24.04.1.

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' . 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' . | 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 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 to 6.14.0-1015.15~24.04.1

    ステージング環境で 6.14.0-1015.15~24.04.1 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:Pro:14.04:LTS linux
All versions
—
Ubuntu:Pro:14.04:LTS linux-aws
All versions
—
Ubuntu:Pro:14.04:LTS linux-azure
All versions
—
Ubuntu:Pro:14.04:LTS linux-lts-xenial
All versions
—
Ubuntu:Pro:16.04:LTS linux
All versions
—
Ubuntu:Pro:16.04:LTS linux-aws
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-kvm
All versions
—
Ubuntu:Pro:16.04:LTS linux-oracle
All versions
—
Ubuntu:Pro:FIPS:16.04:LTS linux-fips
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
All versions
—
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
All versions
—
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
All versions
—
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
All versions
—
Ubuntu:18.04:LTS linux-hwe-edge
All versions
—
Ubuntu:Pro:18.04:LTS linux-ibm-5.4
All versions
—
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
All versions
—
Ubuntu:Pro:18.04:LTS linux-raspi-5.4
All versions
—
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:Pro:20.04:LTS linux
All versions
—
Ubuntu:Pro:20.04:LTS linux-aws
All versions
—
Ubuntu:20.04:LTS linux-aws-5.11
All versions
—
Ubuntu:20.04:LTS linux-aws-5.13
All versions
—
Ubuntu:Pro:20.04:LTS linux-aws-5.15
All versions
—
Ubuntu:20.04:LTS linux-aws-5.8
All versions
—
Ubuntu:Pro:20.04:LTS linux-azure
All versions
—
Ubuntu:20.04:LTS linux-azure-5.11
All versions
—
Ubuntu:20.04:LTS linux-azure-5.13
All versions
—
Ubuntu:Pro:20.04:LTS linux-azure-5.15
All versions
—
Ubuntu:20.04:LTS linux-azure-5.8
All versions
—
Ubuntu:20.04:LTS linux-azure-fde
All versions
—
Ubuntu:Pro:20.04:LTS linux-azure-fde-5.15
All versions
—
Ubuntu:Pro:20.04:LTS linux-bluefield
All versions
—
Ubuntu:Pro:20.04:LTS linux-gcp
All versions
—
Ubuntu:20.04:LTS linux-gcp-5.11
All versions
—
Ubuntu:20.04:LTS linux-gcp-5.13
All versions
—
Ubuntu:Pro:20.04:LTS linux-gcp-5.15
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
All versions
—
Ubuntu:20.04:LTS linux-hwe-5.8
All versions
—
Ubuntu:Pro:20.04:LTS linux-ibm
All versions
—
Ubuntu:Pro:20.04:LTS linux-ibm-5.15
All versions
—
Ubuntu:20.04:LTS linux-intel-5.13
All versions
—
Ubuntu:Pro:20.04:LTS linux-intel-iotg-5.15
All versions
—
Ubuntu:Pro:20.04:LTS linux-iot
All versions
—
Ubuntu:Pro:20.04:LTS linux-kvm
All versions
—
Ubuntu:Pro:20.04:LTS linux-lowlatency-hwe-5.15
All versions
—
Ubuntu:Pro:20.04:LTS linux-nvidia-tegra-5.15
All versions
—
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:Pro:20.04:LTS linux-oracle
All versions
—
Ubuntu:20.04:LTS linux-oracle-5.11
All versions
—
Ubuntu:20.04:LTS linux-oracle-5.13
All versions
—
Ubuntu:Pro:20.04:LTS linux-oracle-5.15
All versions
—
Ubuntu:20.04:LTS linux-oracle-5.8
All versions
—
Ubuntu:Pro:20.04:LTS linux-raspi
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:Pro:20.04:LTS linux-riscv-5.15
All versions
—
Ubuntu:20.04:LTS linux-riscv-5.8
All versions
—
Ubuntu:Pro:20.04:LTS linux-xilinx-zynqmp
All versions
—
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-aws-fips
All versions
—
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-azure-fips
All versions
—
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-fips
All versions
—
Ubuntu:Pro:FIPS-updates:20.04:LTS linux-gcp-fips
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-allwinner-5.19
All versions
—
Ubuntu:22.04:LTS linux-aws
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-azure
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-azure-fde
All versions
—
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-azure-fde-6.8
All versions
—
Ubuntu:22.04:LTS linux-gcp
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-gke
All versions
—
Ubuntu:22.04:LTS linux-gkeop
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-ibm
All versions
—
Ubuntu:22.04:LTS linux-ibm-6.8
All versions
—
Ubuntu:22.04:LTS linux-intel-iot-realtime
All versions
—
Ubuntu:22.04:LTS linux-intel-iotg
All versions
—
Ubuntu:22.04:LTS linux-kvm
All versions
—
Ubuntu:22.04:LTS linux-lowlatency
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-nvidia
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-nvidia-tegra
All versions
—
Ubuntu:22.04:LTS linux-nvidia-tegra-igx
All versions
—
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
All versions
—
Ubuntu:22.04:LTS linux-oracle-6.5
All versions
—
Ubuntu:22.04:LTS linux-oracle-6.8
All versions
—
Ubuntu:22.04:LTS linux-raspi
All versions
—
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
All versions
—
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
All versions
—
Ubuntu:Nvidia-BlueField:22.04:LTS linux-bluefield
All versions
—
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
All versions
—
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-azure-fips
All versions
—
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-fips
All versions
—
Ubuntu:Pro:FIPS-updates:22.04:LTS linux-gcp-fips
All versions
—
Ubuntu:Pro:Realtime:22.04:LTS linux-intel-iot-realtime
All versions
—
Ubuntu:Pro:Realtime:22.04:LTS linux-realtime
All versions
—
Ubuntu:Pro:Realtime:22.04:LTS linux-realtime-6.8
All versions
—
Ubuntu:24.04:LTS linux
All versions
—
Ubuntu:24.04:LTS linux-aws
All versions
—
Ubuntu:24.04:LTS linux-aws-6.14
< 6.14.0-1015.15~24.04.1
6.14.0-1015.15~24.04.1
Ubuntu:24.04:LTS linux-azure
All versions
—
Ubuntu:24.04:LTS linux-azure-6.11
All versions
—
Ubuntu:24.04:LTS linux-azure-6.14
< 6.14.0-1014.14~24.04.1
6.14.0-1014.14~24.04.1
Ubuntu:24.04:LTS linux-azure-fde
All versions
—
Ubuntu:24.04:LTS linux-azure-fde-6.17
All versions
—
Ubuntu:24.04:LTS linux-azure-nvidia
All versions
—
Ubuntu:24.04:LTS linux-azure-nvidia-6.14
< 6.14.0-1007.7
6.14.0-1007.7
Ubuntu:24.04:LTS linux-gcp
All versions
—
Ubuntu:24.04:LTS linux-gcp-6.11
All versions
—
Ubuntu:24.04:LTS linux-gcp-6.14
< 6.14.0-1018.19~24.04.1
6.14.0-1018.19~24.04.1
Ubuntu:24.04:LTS linux-gke
All versions
—
Ubuntu:24.04:LTS linux-gkeop
All versions
—
Ubuntu:24.04:LTS linux-hwe-6.11
All versions
—
Ubuntu:24.04:LTS linux-ibm
All versions
—
Ubuntu:24.04:LTS linux-intel
All versions
—
Ubuntu:24.04:LTS linux-lowlatency
All versions
—
Ubuntu:24.04:LTS linux-lowlatency-hwe-6.11
All versions
—
Ubuntu:24.04:LTS linux-nvidia
All versions
—
Ubuntu:24.04:LTS linux-nvidia-6.11
All versions
—
Ubuntu:24.04:LTS linux-nvidia-lowlatency
All versions
—
Ubuntu:24.04:LTS linux-nvidia-tegra
All versions
—
Ubuntu:24.04:LTS linux-oem-6.11
All versions
—
Ubuntu:24.04:LTS linux-oem-6.14
< 6.14.0-1014.14
6.14.0-1014.14
Ubuntu:24.04:LTS linux-oem-6.8
All versions
—
Ubuntu:24.04:LTS linux-oracle
All versions
—
Ubuntu:24.04:LTS linux-oracle-6.14
< 6.14.0-1015.15~24.04.1
6.14.0-1015.15~24.04.1
Ubuntu:24.04:LTS linux-raspi
All versions
—
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-riscv-6.14
< 6.14.0-34.34.1~24.04.1
6.14.0-34.34.1~24.04.1
Ubuntu:24.04:LTS linux-xilinx
All versions
—
Ubuntu:Pro:FIPS-updates:24.04:LTS linux-aws-fips
All versions
—
Ubuntu:Pro:FIPS-updates:24.04:LTS linux-azure-fips
All versions
—
Ubuntu:Pro:FIPS-updates:24.04:LTS linux-fips
All versions
—
Ubuntu:Pro:FIPS-updates:24.04:LTS linux-gcp-fips
All versions
—
Ubuntu:Pro:Realtime:24.04:LTS linux-raspi-realtime
All versions
—
Ubuntu:Pro:Realtime:24.04:LTS linux-realtime
All versions
—
Ubuntu:Pro:Realtime:24.04:LTS linux-realtime-6.14
< 6.14.0-1014.14~24.04.1
6.14.0-1014.14~24.04.1
Ubuntu:25.10 linux-azure-fde
All versions
—
Ubuntu:26.04 linux-nvidia
All versions
—
Ubuntu:Nvidia-BlueField:24.04:LTS linux-bluefield
All versions
—
Ubuntu:24.04:LTS linux-vmware
All versions
—
Original description The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved: riscv: save the SR_SUM status over switches When threads/tasks are switched we need to ensure the old execution's SR_SUM state is saved and the new thread has the old SR_SUM state restored. The issue was seen under heavy load especially with the syz-stress tool running, with crashes as follows in schedule_tail: Unable to handle kernel access to user memory without uaccess routines at virtual address 000000002749f0d0 Oops [#1] Modules linked in: CPU: 1 PID: 4875 Comm: syz-executor.0 Not tainted 5.12.0-rc2-syzkaller-00467-g0d7588ab9ef9 #0 Hardware name: riscv-virtio,qemu (DT) epc : schedule_tail+0x72/0xb2 kernel/sched/core.c:4264 ra : task_pid_vnr include/linux/sched.h:1421 [inline] ra : schedule_tail+0x70/0xb2 kernel/sched/core.c:4264 epc : ffffffe00008c8b0 ra : ffffffe00008c8ae sp : ffffffe025d17ec0 gp : ffffffe005d25378 tp : ffffffe00f0d0000 t0 : 0000000000000000 t1 : 0000000000000001 t2 : 00000000000f4240 s0 : ffffffe025d17ee0 s1 : 000000002749f0d0 a0 : 000000000000002a a1 : 0000000000000003 a2 : 1ffffffc0cfac500 a3 : ffffffe0000c80cc a4 : 5ae9db91c19bbe00 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffffe000082eba s2 : 0000000000040000 s3 : ffffffe00eef96c0 s4 : ffffffe022c77fe0 s5 : 0000000000004000 s6 : ffffffe067d74e00 s7 : ffffffe067d74850 s8 : ffffffe067d73e18 s9 : ffffffe067d74e00 s10: ffffffe00eef96e8 s11: 000000ae6cdf8368 t3 : 5ae9db91c19bbe00 t4 : ffffffc4043cafb2 t5 : ffffffc404…

Source: OSV.dev (Open Source Vulnerabilities) OSV

References

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