CVE & CISA-KEV Catalog

CVE-2025-21659

MEDIUM
5.5
CVSS v3
NVD

Description

In the Linux kernel, the following vulnerability has been resolved: netdev: prevent accessing NAPI instances from another namespace The NAPI IDs were not fully exposed to user space prior to the netlink API, so they were never namespaced. The netlink API must ensure that at the very least NAPI instance belongs to the same netns as the owner of the genl sock. napi_by_id() can become static now, but it needs to move because of dev_get_by_napi_id().

How to fix

Remediation Available
linuxDebian
Fixed in:6.12.10-1CVE-2025-21659
Fixed in:6.12.10-1CVE-2025-21659
linuxUbuntu
Fixed in:6.8.0-60.63USN-7513-1
linux-awsUbuntu
Fixed in:6.8.0-1029.31USN-7513-1
linux-aws-6.8Ubuntu
Fixed in:6.8.0-1029.31~22.04.1USN-7513-1
linux-azureUbuntu
Fixed in:6.8.0-1029.34USN-7513-3
linux-azure-6.8Ubuntu
Fixed in:6.8.0-1029.34~22.04.1USN-7513-3
linux-azure-nvidiaUbuntu
Fixed in:6.8.0-1016.17USN-7522-1
linux-gcpUbuntu
Fixed in:6.8.0-1030.32USN-7515-2
linux-gcp-6.8Ubuntu
Fixed in:6.8.0-1030.32~22.04.1USN-7515-2
linux-gkeUbuntu
Fixed in:6.8.0-1025.29USN-7515-1
linux-gkeopUbuntu
Fixed in:6.8.0-1012.14USN-7515-2
linux-hwe-6.11Ubuntu
Fixed in:6.11.0-21.21~24.04.1USN-7379-1
linux-hwe-6.8Ubuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-ibmUbuntu
Fixed in:6.8.0-1026.26USN-7513-1
linux-image-6.11.0-1011-lowlatencyUbuntu
Fixed in:6.11.0-1011.12~24.04.1USN-7381-1
linux-image-6.11.0-1011-lowlatency-64kUbuntu
Fixed in:6.11.0-1011.12~24.04.1USN-7381-1
linux-image-6.11.0-1017-oemUbuntu
Fixed in:6.11.0-1017.17USN-7382-1
linux-image-6.11.0-21-genericUbuntu
Fixed in:6.11.0-21.21~24.04.1+1USN-7379-1
linux-image-6.11.0-21-generic-64kUbuntu
Fixed in:6.11.0-21.21~24.04.1+1USN-7379-1
linux-image-6.8.0-1012-gkeopUbuntu
Fixed in:6.8.0-1012.14USN-7515-2
linux-image-6.8.0-1016-azure-nvidiaUbuntu
Fixed in:6.8.0-1016.17USN-7522-1
linux-image-6.8.0-1025-gkeUbuntu
Fixed in:6.8.0-1025.29USN-7515-1
linux-image-6.8.0-1026-ibmUbuntu
Fixed in:6.8.0-1026.26USN-7513-1
linux-image-6.8.0-1026-oracleUbuntu
Fixed in:6.8.0-1026.27~22.04.1USN-7513-5
Fixed in:6.8.0-1026.27USN-7513-1
linux-image-6.8.0-1026-oracle-64kUbuntu
Fixed in:6.8.0-1026.27~22.04.1USN-7513-5
Fixed in:6.8.0-1026.27USN-7513-1
linux-image-6.8.0-1028-nvidiaUbuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
Fixed in:6.8.0-1028.31USN-7514-1
linux-image-6.8.0-1028-nvidia-64kUbuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
Fixed in:6.8.0-1028.31USN-7514-1
linux-image-6.8.0-1028-nvidia-lowlatencyUbuntu
Fixed in:6.8.0-1028.31.1USN-7514-1
linux-image-6.8.0-1028-nvidia-lowlatency-64kUbuntu
Fixed in:6.8.0-1028.31.1USN-7514-1
linux-image-6.8.0-1028-oemUbuntu
Fixed in:6.8.0-1028.28USN-7513-3
linux-image-6.8.0-1028-raspiUbuntu
Fixed in:6.8.0-1028.32USN-7524-1
linux-image-6.8.0-1029-awsUbuntu
Fixed in:6.8.0-1029.31~22.04.1USN-7513-1
Fixed in:6.8.0-1029.31USN-7513-1
linux-image-6.8.0-1029-azureUbuntu
Fixed in:6.8.0-1029.34~22.04.1USN-7513-3
Fixed in:6.8.0-1029.34USN-7513-3
linux-image-6.8.0-1029-azure-fdeUbuntu
Fixed in:6.8.0-1029.34~22.04.1USN-7513-3
Fixed in:6.8.0-1029.34USN-7513-3
linux-image-6.8.0-1030-gcpUbuntu
Fixed in:6.8.0-1030.32~22.04.1USN-7515-2
Fixed in:6.8.0-1030.32USN-7515-2
linux-image-6.8.0-1030-gcp-64kUbuntu
Fixed in:6.8.0-1030.32~22.04.1USN-7515-2
Fixed in:6.8.0-1030.32USN-7515-2
linux-image-6.8.0-2023-raspi-realtimeUbuntu
Fixed in:6.8.0-2023.24USN-7523-1
linux-image-6.8.0-60-genericUbuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
Fixed in:6.8.0-60.63USN-7513-1
linux-image-6.8.0-60-generic-64kUbuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
Fixed in:6.8.0-60.63USN-7513-1
linux-image-6.8.0-60-lowlatencyUbuntu
Fixed in:6.8.0-60.63.1~22.04.1USN-7513-1
Fixed in:6.8.0-60.63.1USN-7513-1
linux-image-6.8.0-60-lowlatency-64kUbuntu
Fixed in:6.8.0-60.63.1~22.04.1USN-7513-1
Fixed in:6.8.0-60.63.1USN-7513-1
linux-image-6.8.1-1022-realtimeUbuntu
Fixed in:6.8.1-1022.23USN-7513-2
linux-image-awsUbuntu
Fixed in:6.8.0-1029.31~22.04.1USN-7513-1
Fixed in:6.8.0-1029.31USN-7513-1
linux-image-aws-lts-24.04Ubuntu
Fixed in:6.8.0-1029.31USN-7513-1
linux-image-azureUbuntu
Fixed in:6.8.0-1029.34~22.04.1USN-7513-3
linux-image-azure-fdeUbuntu
Fixed in:6.8.0-1029.34~22.04.1USN-7513-3
linux-image-azure-fde-lts-24.04Ubuntu
Fixed in:6.8.0-1029.34USN-7513-3
linux-image-azure-lts-24.04Ubuntu
Fixed in:6.8.0-1029.34USN-7513-3
linux-image-azure-nvidiaUbuntu
Fixed in:6.8.0-1016.17USN-7522-1
linux-image-gcpUbuntu
Fixed in:6.8.0-1030.32~22.04.1USN-7515-2
linux-image-gcp-64kUbuntu
Fixed in:6.8.0-1030.32~22.04.1USN-7515-2
linux-image-gcp-64k-lts-24.04Ubuntu
Fixed in:6.8.0-1030.32USN-7515-2
linux-image-gcp-lts-24.04Ubuntu
Fixed in:6.8.0-1030.32USN-7515-2
linux-image-genericUbuntu
Fixed in:6.8.0-60.63USN-7513-1
linux-image-generic-64kUbuntu
Fixed in:6.8.0-60.63USN-7513-1
linux-image-generic-64k-hwe-22.04Ubuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-generic-64k-hwe-24.04Ubuntu
Fixed in:6.11.0-21.21~24.04.1USN-7379-1
linux-image-generic-hwe-22.04Ubuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-generic-hwe-24.04Ubuntu
Fixed in:6.11.0-21.21~24.04.1USN-7379-1
linux-image-generic-lpaeUbuntu
Fixed in:6.8.0-60.63USN-7513-1
linux-image-gkeUbuntu
Fixed in:6.8.0-1025.29USN-7515-1
linux-image-gkeopUbuntu
Fixed in:6.8.0-1012.14USN-7515-2
linux-image-gkeop-6.8Ubuntu
Fixed in:6.8.0-1012.14USN-7515-2
linux-image-ibmUbuntu
Fixed in:6.8.0-1026.26USN-7513-1
linux-image-ibm-classicUbuntu
Fixed in:6.8.0-1026.26USN-7513-1
linux-image-ibm-lts-24.04Ubuntu
Fixed in:6.8.0-1026.26USN-7513-1
linux-image-kvmUbuntu
Fixed in:6.8.0-60.63USN-7513-1
linux-image-lowlatencyUbuntu
Fixed in:6.8.0-60.63.1USN-7513-1
linux-image-lowlatency-64kUbuntu
Fixed in:6.8.0-60.63.1USN-7513-1
linux-image-lowlatency-64k-hwe-22.04Ubuntu
Fixed in:6.8.0-60.63.1~22.04.1USN-7513-1
linux-image-lowlatency-64k-hwe-24.04Ubuntu
Fixed in:6.11.0-1011.12~24.04.1USN-7381-1
linux-image-lowlatency-hwe-22.04Ubuntu
Fixed in:6.8.0-60.63.1~22.04.1USN-7513-1
linux-image-lowlatency-hwe-24.04Ubuntu
Fixed in:6.11.0-1011.12~24.04.1USN-7381-1
linux-image-nvidiaUbuntu
Fixed in:6.8.0-1028.31USN-7514-1
linux-image-nvidia-6.8Ubuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
linux-image-nvidia-64kUbuntu
Fixed in:6.8.0-1028.31USN-7514-1
linux-image-nvidia-64k-6.8Ubuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
linux-image-nvidia-64k-hwe-22.04Ubuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
linux-image-nvidia-hwe-22.04Ubuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
linux-image-nvidia-lowlatencyUbuntu
Fixed in:6.8.0-1028.31.1USN-7514-1
linux-image-nvidia-lowlatency-64kUbuntu
Fixed in:6.8.0-1028.31.1USN-7514-1
linux-image-oem-22.04Ubuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-oem-22.04aUbuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-oem-22.04bUbuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-oem-22.04cUbuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-oem-22.04dUbuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-oem-24.04Ubuntu
Fixed in:6.8.0-1028.28USN-7513-3
linux-image-oem-24.04aUbuntu
Fixed in:6.8.0-1028.28USN-7513-3
linux-image-oem-24.04bUbuntu
Fixed in:6.11.0-1017.17USN-7382-1
linux-image-oracleUbuntu
Fixed in:6.8.0-1026.27~22.04.1USN-7513-5
Fixed in:6.8.0-1026.27USN-7513-1
linux-image-oracle-64kUbuntu
Fixed in:6.8.0-1026.27~22.04.1USN-7513-5
Fixed in:6.8.0-1026.27USN-7513-1
linux-image-oracle-64k-lts-24.04Ubuntu
Fixed in:6.8.0-1026.27USN-7513-1
linux-image-oracle-lts-24.04Ubuntu
Fixed in:6.8.0-1026.27USN-7513-1
linux-image-raspiUbuntu
Fixed in:6.8.0-1028.32USN-7524-1
linux-image-raspi-realtimeUbuntu
Fixed in:6.8.0-2023.24USN-7523-1
linux-image-realtimeUbuntu
Fixed in:6.8.1-1022.23USN-7513-2
linux-image-virtualUbuntu
Fixed in:6.8.0-60.63USN-7513-1
linux-image-virtual-hwe-22.04Ubuntu
Fixed in:6.8.0-60.63~22.04.1USN-7513-4
linux-image-virtual-hwe-24.04Ubuntu
Fixed in:6.11.0-21.21~24.04.1USN-7379-1
linux-lowlatencyUbuntu
Fixed in:6.8.0-60.63.1USN-7513-1
linux-lowlatency-hwe-6.11Ubuntu
Fixed in:6.11.0-1011.12~24.04.1USN-7381-1
linux-lowlatency-hwe-6.8Ubuntu
Fixed in:6.8.0-60.63.1~22.04.1USN-7513-1
linux-nvidiaUbuntu
Fixed in:6.8.0-1028.31USN-7514-1
linux-nvidia-6.8Ubuntu
Fixed in:6.8.0-1028.31~22.04.1USN-7514-1
linux-nvidia-lowlatencyUbuntu
Fixed in:6.8.0-1028.31.1USN-7514-1
linux-oem-6.11Ubuntu
Fixed in:6.11.0-1017.17USN-7382-1
linux-oem-6.8Ubuntu
Fixed in:6.8.0-1028.28USN-7513-3
linux-oracleUbuntu
Fixed in:6.8.0-1026.27USN-7513-1
linux-oracle-6.8Ubuntu
Fixed in:6.8.0-1026.27~22.04.1USN-7513-5
linux-raspiUbuntu
Fixed in:6.8.0-1028.32USN-7524-1
linux-raspi-realtimeUbuntu
Fixed in:6.8.0-2023.24USN-7523-1
linux-realtimeUbuntu
Fixed in:6.8.1-1022.23USN-7513-2

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.17%probability of exploitation in 30 days
7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

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CVE-2025-21659 severity badge

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-15.