CVE-2025-38403 json
vsock/vmci: Clear the vmci transport packet properly when initializing it
published 2025-07-25 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-22599
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
In the Linux kernel, the following vulnerability has been resolved:
vsock/vmci: Clear the vmci transport packet properly when initializing it
In vmci_transport_packet_init memset the vmci_transport_packet before populating the fields to avoid any uninitialised data being left in the structure.
Patch / fix
- Linux Linux 5.4.296, 5.10.240, 5.15.187, 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16
- linux Debian 12 6.1.147-1
- linux Debian 14, Debian 13 6.12.37-1
debian advisories DEBIAN-CVE-2025-38403
- linux Ubuntu 22.04 LTS 5.15.0-156.166
- linux Ubuntu 24.04 LTS 6.8.0-100.100
- linux-aws Ubuntu 22.04 LTS 5.15.0-1092.99
- linux-aws Ubuntu 24.04 LTS 6.8.0-1046.49
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1092.101
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1047.50
- linux-gke Ubuntu 22.04 LTS 5.15.0-1089.95
- linux-gke Ubuntu 24.04 LTS 6.8.0-1043.48
ubuntu advisories UBUNTU-CVE-2025-38403
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel-rt RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-kvm RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-core RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-modules RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-debug-kvm RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-debug-core RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-debug-modules RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-modules-extra RHEL 8 4.18.0-553.104.1.rt7.445.el8_10
red hat advisories RHSA-2026:65712RHSA-2026:2378RHSA-2026:2282RHSA-2026:2264RHSA-2026:2212
- kernel-rt Linux Micro 6.2 6.12.0-160000.6.1
- kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
- kernel-source SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
- kernel-default SLES 16.0, SLE High Availability Extension 16.0, Linux Micro 6.2 +1 more 6.12.0-160000.6.1
- kernel-default-base SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1.160000.2.4
- kernel-syms SLES 16.0, Linux Micro Extras 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
- kernel-obs-qa SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.6.1
- kernel-kvmsmall SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.6.1
suse advisories SUSE-SU-2025:21074-1SUSE-SU-2025:21139-1SUSE-SU-2026:20560-1SUSE-SU-2025:21179-1SUSE-SU-2025:03023-1SUSE-SU-2025:03011-1
- kernel-rt openSUSE Leap 16.0 6.12.0-160000.6.1
- dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-64kb openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-syms openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-source openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-default openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-kvmsmall openSUSE Leap 16.0 6.12.0-160000.6.1
opensuse advisories openSUSE-SU-2025:20081-1
- kernel-rt AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-core AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-modules AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-debug-core AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel-rt-debug-modules-extra AlmaLinux 8 4.18.0-553.104.1.rt7.445.el8_10
- kernel AlmaLinux 9 5.14.0-611.30.1.el9_7
almalinux advisories ALSA-2026:2378ALSA-2026:2212ALSA-2026:2264ALSA-2026:2282
- kernel Rocky Linux 10 6.12.0-124.35.1.el10_1
- kernel Rocky Linux 9 5.14.0-611.30.1.el9_7
- kernel Rocky Linux 8 4.18.0-553.104.1.el8_10
rocky linux advisories RLSA-2026:2282RLSA-2026:2212RLSA-2026:2264
- kernel Azure Linux 3.0 6.6.104.2-1
- kernel CBL-Mariner 2.0 5.15.200.1-1
azure linux advisories AZL-65771AZL-73025
Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT
- git.kernel.org/stable/c/19c2cc01ff9a8031398a802676ffb0f4692dd95d commit
- git.kernel.org/stable/c/1c1bcb0e78230f533b4103e8cf271d17c3f469f0 commit
- git.kernel.org/stable/c/2d44723a091bc853272e1a51a488a3d22b80be5e commit
- git.kernel.org/stable/c/0a01021317375b8d1895152f544421ce49299eb1 commit
- git.kernel.org/stable/c/94d0c326cb3ee6b0f8bd00e209550b93fcc5c839 commit
- git.kernel.org/stable/c/75705b44e0b9aaa74f4c163d93d388bcba9e386a commit
- git.kernel.org/stable/c/e9a673153d578fd439919a24e99851b2f87ecbce commit
- git.kernel.org/stable/c/223e2288f4b8c262a864e2c03964ffac91744cd5 commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-38403 updated cvss 7.1
kernel: Kernel: Privilege escalation via uninitialized data in vmci transport packet
-
Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 moreaffected: no fix available
-
Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.30.1.el9_7, perf 5.14.0-611.30.1.el9_7, rtla 5.14.0-611.30.1.el9_7, python3-perf 5.14.0-611.30.1.el9_7, kernel-devel-matched 5.14.0-611.30.1.el9_7, kernel-64k-devel-matched 5.14.0-611.30.1.el9_7, +7 morefixed: vendor fix RHSA-2026:2212
-
Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-124.35.1.el10_1, perf 6.12.0-124.35.1.el10_1, rtla 6.12.0-124.35.1.el10_1, python3-perf 6.12.0-124.35.1.el10_1, kernel-devel-matched 6.12.0-124.35.1.el10_1, kernel-64k-devel-matched 6.12.0-124.35.1.el10_1, +7 morefixed: vendor fix RHSA-2026:2282
-
Red Hat Enterprise Linux AppStream E4S (v.9.4) rv 5.14.0-427.149.1.el9_4, perf 5.14.0-427.149.1.el9_4, rtla 5.14.0-427.149.1.el9_4, kernel-devel-matched 5.14.0-427.149.1.el9_4, kernel-64k-devel-matched 5.14.0-427.149.1.el9_4, kernel-debug-devel-matched 5.14.0-427.149.1.el9_4, +6 morefixed: vendor fix RHSA-2026:65712
-
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.104.1.el8_10, kernel 4.18.0-553.104.1.el8_10, bpftool 4.18.0-553.104.1.el8_10, kernel-core 4.18.0-553.104.1.el8_10, kernel-tools 4.18.0-553.104.1.el8_10, python3-perf 4.18.0-553.104.1.el8_10, +15 morefixed: vendor fix RHSA-2026:2264
-
Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.30.1.el9_7, kernel-64k 5.14.0-611.30.1.el9_7, kernel-core 5.14.0-611.30.1.el9_7, kernel-tools 5.14.0-611.30.1.el9_7, kernel-modules 5.14.0-611.30.1.el9_7, kernel-64k-core 5.14.0-611.30.1.el9_7, +27 morefixed: vendor fix RHSA-2026:2212
-
Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-124.35.1.el10_1, kernel-64k 6.12.0-124.35.1.el10_1, kernel-core 6.12.0-124.35.1.el10_1, kernel-tools 6.12.0-124.35.1.el10_1, kernel-modules 6.12.0-124.35.1.el10_1, kernel-64k-core 6.12.0-124.35.1.el10_1, +28 morefixed: vendor fix RHSA-2026:2282
-
Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool 7.3.0-427.149.1.el9_4, kernel 5.14.0-427.149.1.el9_4, kernel-64k 5.14.0-427.149.1.el9_4, kernel-core 5.14.0-427.149.1.el9_4, kernel-tools 5.14.0-427.149.1.el9_4, python3-perf 5.14.0-427.149.1.el9_4, +28 morefixed: vendor fix RHSA-2026:65712
show 12 moreshow fewer
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Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.30.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-611.30.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-611.30.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.30.1.el9_7, kernel-debuginfo-common-ppc64le 5.14.0-611.30.1.el9_7fixed: vendor fix RHSA-2026:2212
-
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-124.35.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-124.35.1.el10_1, kernel-debuginfo-common-x86_64 6.12.0-124.35.1.el10_1, kernel-debuginfo-common-aarch64 6.12.0-124.35.1.el10_1, kernel-debuginfo-common-ppc64le 6.12.0-124.35.1.el10_1fixed: vendor fix RHSA-2026:2282
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Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.104.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.104.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.104.1.el8_10fixed: vendor fix RHSA-2026:2264
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Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-kvm 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-core 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-modules 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-debug-kvm 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-debug-core 4.18.0-553.104.1.rt7.445.el8_10, +4 morefixed: vendor fix RHSA-2026:2378
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Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.30.1.el9_7, kernel-rt-64k 5.14.0-611.30.1.el9_7, kernel-rt-core 5.14.0-611.30.1.el9_7, kernel-rt-modules 5.14.0-611.30.1.el9_7, kernel-rt-64k-core 5.14.0-611.30.1.el9_7, kernel-rt-debug-core 5.14.0-611.30.1.el9_7, +14 morefixed: vendor fix RHSA-2026:2212
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Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-124.35.1.el10_1, kernel-rt-64k 6.12.0-124.35.1.el10_1, kernel-rt-core 6.12.0-124.35.1.el10_1, kernel-rt-modules 6.12.0-124.35.1.el10_1, kernel-rt-64k-core 6.12.0-124.35.1.el10_1, kernel-rt-debug-core 6.12.0-124.35.1.el10_1, +14 morefixed: vendor fix RHSA-2026:2282
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Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt 5.14.0-427.149.1.el9_4, kernel-rt-core 5.14.0-427.149.1.el9_4, kernel-rt-modules 5.14.0-427.149.1.el9_4, kernel-rt-debug-core 5.14.0-427.149.1.el9_4, kernel-rt-modules-core 5.14.0-427.149.1.el9_4, kernel-rt-debug-modules 5.14.0-427.149.1.el9_4, +4 morefixed: vendor fix RHSA-2026:65712
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Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.30.1.el9_7, kernel-rt-core 5.14.0-611.30.1.el9_7, kernel-rt-modules 5.14.0-611.30.1.el9_7, kernel-rt-debug-core 5.14.0-611.30.1.el9_7, kernel-rt-modules-core 5.14.0-611.30.1.el9_7, kernel-rt-debug-modules 5.14.0-611.30.1.el9_7, +4 morefixed: vendor fix RHSA-2026:2212
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Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-124.35.1.el10_1, kernel-rt-core 6.12.0-124.35.1.el10_1, kernel-rt-modules 6.12.0-124.35.1.el10_1, kernel-rt-debug-core 6.12.0-124.35.1.el10_1, kernel-rt-modules-core 6.12.0-124.35.1.el10_1, kernel-rt-debug-modules 6.12.0-124.35.1.el10_1, +4 morefixed: vendor fix RHSA-2026:2282
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Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt 5.14.0-427.149.1.el9_4, kernel-rt-kvm 5.14.0-427.149.1.el9_4, kernel-rt-core 5.14.0-427.149.1.el9_4, kernel-rt-modules 5.14.0-427.149.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.149.1.el9_4, kernel-rt-debug-core 5.14.0-427.149.1.el9_4, +6 morefixed: vendor fix RHSA-2026:65712
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Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-core 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-modules 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-debug-core 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-debug-modules 4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-modules-extra 4.18.0-553.104.1.rt7.445.el8_10, +2 morefixed: vendor fix RHSA-2026:2378
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Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Linux Linux
Classification
- Technology feeds
References
-
git.kernel.org
/stable/c/19c2cc01ff9a8031398a802676ffb0f4692dd95d
patch
-
git.kernel.org
/stable/c/1c1bcb0e78230f533b4103e8cf271d17c3f469f0
patch
-
git.kernel.org
/stable/c/2d44723a091bc853272e1a51a488a3d22b80be5e
patch
-
git.kernel.org
/stable/c/0a01021317375b8d1895152f544421ce49299eb1
patch
-
git.kernel.org
/stable/c/94d0c326cb3ee6b0f8bd00e209550b93fcc5c839
patch
-
git.kernel.org
/stable/c/75705b44e0b9aaa74f4c163d93d388bcba9e386a
patch
-
git.kernel.org
/stable/c/e9a673153d578fd439919a24e99851b2f87ecbce
patch
-
git.kernel.org
/stable/c/223e2288f4b8c262a864e2c03964ffac91744cd5
patch
-
lists.debian.org
/debian-lts-announce/2025/10/msg00008.html
third-party-advisory
-
lists.debian.org
/debian-lts-announce/2025/10/msg00007.html
third-party-advisory
Sources
- CVE List CVE-2025-38403
- NVD CVE-2025-38403
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.