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high 7.8

CVE-2025-37789 json

net: openvswitch: fix nested key length validation in the set() action

published last yr. modified 3mo ago also EUVD-2025-13015

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: openvswitch: fix nested key length validation in the set() action

It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.

Patch / fix

  • Linux Linux 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.25, 6.14.4, 6.15
  • linux Debian 12 6.1.135-1
  • linux Debian 14, Debian 13 6.12.25-1

debian advisories DEBIAN-CVE-2025-37789

  • linux Ubuntu 22.04 LTS 5.15.0-144.157
  • linux Ubuntu 24.04 LTS 6.8.0-100.100
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1088.95
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1046.49
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1087.96
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1047.50
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1085.91
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1043.48

ubuntu advisories UBUNTU-CVE-2025-37789

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 RHEL 9 5.14.0-611.30.1.el9_7
  • rv RHEL 9 5.14.0-611.30.1.el9_7
  • perf RHEL 9 5.14.0-611.30.1.el9_7
  • rtla RHEL 9 5.14.0-611.30.1.el9_7
  • libperf RHEL 9 5.14.0-611.30.1.el9_7
  • kernel-rt RHEL 9 5.14.0-611.30.1.el9_7
  • kernel-64k RHEL 9 5.14.0-611.30.1.el9_7
  • kernel-core RHEL 9 5.14.0-611.30.1.el9_7

red hat advisories RHSA-2026:2212RHSA-2026:1495RHSA-2026:1494RHSA-2026:1444RHSA-2026:1443RHSA-2026:1441

  • kernel-64kb SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS, SLE High Performance Computing 15 SP4-ESPOS 5.14.21-150400.24.167.1
  • kernel-syms SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.167.1
  • kernel-source SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.167.1
  • kernel-default SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +7 more 5.14.21-150400.24.167.1
  • kernel-zfcpdump SLES 15 SP4-LTSS, Manager Server 4.3 5.14.21-150400.24.167.1
  • kernel-obs-build SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 5.14.21-150400.24.167.1
  • kernel-default-base SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +5 more 5.14.21-150400.24.167.1.150400.24.84.1
  • kernel-64kb SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS, SLE High Performance Computing 15 SP5-ESPOS 5.14.21-150500.55.110.1

suse advisories SUSE-SU-2025:02262-1SUSE-SU-2025:02173-1SUSE-SU-2025:02000-1SUSE-SU-2025:01995-1SUSE-SU-2025:01983-1SUSE-SU-2025:01982-1

  • kernel AlmaLinux 9 5.14.0-611.30.1.el9_7
  • rv AlmaLinux 9 5.14.0-611.30.1.el9_7
  • perf AlmaLinux 9 5.14.0-611.30.1.el9_7
  • rtla AlmaLinux 9 5.14.0-611.30.1.el9_7
  • libperf AlmaLinux 9 5.14.0-611.30.1.el9_7
  • kernel-rt AlmaLinux 9 5.14.0-611.30.1.el9_7
  • kernel-64k AlmaLinux 9 5.14.0-611.30.1.el9_7
  • kernel-core AlmaLinux 9 5.14.0-611.30.1.el9_7

almalinux advisories ALSA-2026:2212

  • kernel Rocky Linux 9 5.14.0-611.30.1.el9_7

rocky linux advisories RLSA-2026:2212

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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-2025-37789 updated cvss 6.1

kernel: Linux kernel (openvswitch): Denial of Service and limited data exposure via improper key length validation

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    affected: no fix planned “Out of support scope”
  • 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 more Red Hat Enterprise Linux 10 kernel
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.108.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.108.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.108.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.108.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.108.1.el9_4
    fixed: vendor fix RHSA-2026:1444
  • Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.81.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.81.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.81.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.81.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.81.1.el9_6
    fixed: vendor fix RHSA-2026:1194
  • 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 more
    fixed: vendor fix RHSA-2026:2212
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.163.1.el9_0, kernel-devel-matched 5.14.0-70.163.1.el9_0, kernel-debug-devel-matched 5.14.0-70.163.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.163.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.163.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.163.1.el9_0, +2 more
    fixed: vendor fix RHSA-2026:1494
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) perf 5.14.0-284.154.1.el9_2, rtla 5.14.0-284.154.1.el9_2, kernel-devel-matched 5.14.0-284.154.1.el9_2, kernel-64k-devel-matched 5.14.0-284.154.1.el9_2, kernel-debug-devel-matched 5.14.0-284.154.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.154.1.el9_2, +5 more
    fixed: vendor fix RHSA-2026:1441
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.55.1.el10_0, perf 6.12.0-55.55.1.el10_0, rtla 6.12.0-55.55.1.el10_0, python3-perf 6.12.0-55.55.1.el10_0, kernel-devel-matched 6.12.0-55.55.1.el10_0, kernel-64k-devel-matched 6.12.0-55.55.1.el10_0, +7 more
    fixed: vendor fix RHSA-2026:1236
show 22 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.108.1.el9_4, perf 5.14.0-427.108.1.el9_4, rtla 5.14.0-427.108.1.el9_4, kernel-devel-matched 5.14.0-427.108.1.el9_4, kernel-64k-devel-matched 5.14.0-427.108.1.el9_4, kernel-debug-devel-matched 5.14.0-427.108.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:1444
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.81.1.el9_6, perf 5.14.0-570.81.1.el9_6, rtla 5.14.0-570.81.1.el9_6, python3-perf 5.14.0-570.81.1.el9_6, kernel-devel-matched 5.14.0-570.81.1.el9_6, kernel-64k-devel-matched 5.14.0-570.81.1.el9_6, +7 more
    fixed: vendor fix RHSA-2026:1194
  • 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 more
    fixed: vendor fix RHSA-2026:2212
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.163.1.el9_0, bpftool 5.14.0-70.163.1.el9_0, kernel-core 5.14.0-70.163.1.el9_0, kernel-tools 5.14.0-70.163.1.el9_0, python3-perf 5.14.0-70.163.1.el9_0, kernel-modules 5.14.0-70.163.1.el9_0, +14 more
    fixed: vendor fix RHSA-2026:1494
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool 7.0.0-284.154.1.el9_2, kernel 5.14.0-284.154.1.el9_2, kernel-64k 5.14.0-284.154.1.el9_2, kernel-core 5.14.0-284.154.1.el9_2, kernel-tools 5.14.0-284.154.1.el9_2, python3-perf 5.14.0-284.154.1.el9_2, +28 more
    fixed: vendor fix RHSA-2026:1441
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.55.1.el10_0, kernel-64k 6.12.0-55.55.1.el10_0, kernel-core 6.12.0-55.55.1.el10_0, kernel-tools 6.12.0-55.55.1.el10_0, kernel-modules 6.12.0-55.55.1.el10_0, kernel-64k-core 6.12.0-55.55.1.el10_0, +27 more
    fixed: vendor fix RHSA-2026:1236
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.108.1.el9_4, kernel 5.14.0-427.108.1.el9_4, kernel-64k 5.14.0-427.108.1.el9_4, kernel-core 5.14.0-427.108.1.el9_4, kernel-tools 5.14.0-427.108.1.el9_4, python3-perf 5.14.0-427.108.1.el9_4, +28 more
    fixed: vendor fix RHSA-2026:1444
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.81.1.el9_6, kernel-64k 5.14.0-570.81.1.el9_6, kernel-core 5.14.0-570.81.1.el9_6, kernel-tools 5.14.0-570.81.1.el9_6, kernel-modules 5.14.0-570.81.1.el9_6, kernel-64k-core 5.14.0-570.81.1.el9_6, +27 more
    fixed: vendor fix RHSA-2026:1194
  • 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_7
    fixed: vendor fix RHSA-2026:2212
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.55.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.55.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.55.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.55.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.55.1.el10_0
    fixed: vendor fix RHSA-2026:1236
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-kvm 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-core 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-modules 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-kvm 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-core 5.14.0-70.163.1.rt21.235.el9_0, +4 more
    fixed: vendor fix RHSA-2026:1495
  • 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 more
    fixed: vendor fix RHSA-2026:2212
  • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-core 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-modules 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-core 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-debug-modules 5.14.0-70.163.1.rt21.235.el9_0, kernel-rt-modules-extra 5.14.0-70.163.1.rt21.235.el9_0, +2 more
    fixed: vendor fix RHSA-2026:1495
  • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-core 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-modules 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-debug-core 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-modules-core 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-debug-modules 5.14.0-284.154.1.rt14.439.el9_2, +4 more
    fixed: vendor fix RHSA-2026:1443
  • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.55.1.el10_0, kernel-rt-64k 6.12.0-55.55.1.el10_0, kernel-rt-core 6.12.0-55.55.1.el10_0, kernel-rt-modules 6.12.0-55.55.1.el10_0, kernel-rt-64k-core 6.12.0-55.55.1.el10_0, kernel-rt-debug-core 6.12.0-55.55.1.el10_0, +14 more
    fixed: vendor fix RHSA-2026:1236
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.108.1.el9_4, kernel-rt-core 5.14.0-427.108.1.el9_4, kernel-rt-modules 5.14.0-427.108.1.el9_4, kernel-rt-debug-core 5.14.0-427.108.1.el9_4, kernel-rt-modules-core 5.14.0-427.108.1.el9_4, kernel-rt-debug-modules 5.14.0-427.108.1.el9_4, +4 more
    fixed: vendor fix RHSA-2026:1444
  • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.81.1.el9_6, kernel-rt-64k 5.14.0-570.81.1.el9_6, kernel-rt-core 5.14.0-570.81.1.el9_6, kernel-rt-modules 5.14.0-570.81.1.el9_6, kernel-rt-64k-core 5.14.0-570.81.1.el9_6, kernel-rt-debug-core 5.14.0-570.81.1.el9_6, +14 more
    fixed: vendor fix RHSA-2026:1194
  • 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 more
    fixed: vendor fix RHSA-2026:2212
  • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-kvm 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-core 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-modules 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-debug-kvm 5.14.0-284.154.1.rt14.439.el9_2, kernel-rt-debug-core 5.14.0-284.154.1.rt14.439.el9_2, +6 more
    fixed: vendor fix RHSA-2026:1443
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.55.1.el10_0, kernel-rt-kvm 6.12.0-55.55.1.el10_0, kernel-rt-core 6.12.0-55.55.1.el10_0, kernel-rt-modules 6.12.0-55.55.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.55.1.el10_0, kernel-rt-debug-core 6.12.0-55.55.1.el10_0, +6 more
    fixed: vendor fix RHSA-2026:1236
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.108.1.el9_4, kernel-rt-kvm 5.14.0-427.108.1.el9_4, kernel-rt-core 5.14.0-427.108.1.el9_4, kernel-rt-modules 5.14.0-427.108.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.108.1.el9_4, kernel-rt-debug-core 5.14.0-427.108.1.el9_4, +6 more
    fixed: vendor fix RHSA-2026:1444
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.81.1.el9_6, kernel-rt-kvm 5.14.0-570.81.1.el9_6, kernel-rt-core 5.14.0-570.81.1.el9_6, kernel-rt-modules 5.14.0-570.81.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.81.1.el9_6, kernel-rt-debug-core 5.14.0-570.81.1.el9_6, +6 more
    fixed: vendor fix RHSA-2026:1194

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
4mo ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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

Sources

Fencer Intel 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.