Is CVE-2025-38688 in the CISA KEV catalog?

No. CVE-2025-38688 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-38688?

CVE-2025-38688 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2025-38688?

CVE-2025-38688 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-38688?

Upgrade linux on debian 13 to 6.12.43-1 or later. Fixes are available for 140 affected products.

CVE & CISA-KEV Catalog

CVE-2025-38688

HIGH

7.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd: Prevent ALIGN() overflow When allocating IOVA the candidate range gets aligned to the target alignment. If the range is close to ULONG_MAX then the ALIGN() can wrap resulting in a corrupted iova. Open code the ALIGN() using get_add_overflow() to prevent this. This simplifies the checks as we don't need to check for length earlier either. Consolidate the two copies of this code under a single helper. This bug would allow userspace to create a mapping that overlaps with some other mapping or a reserved range.

How to fix

Remediation Available

linuxDebian

Fixed in:6.12.43-1CVE-2025-38688

Fixed in:6.16.3-1CVE-2025-38688

linuxUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-awsUbuntu

Fixed in:6.8.0-1046.49USN-8028-5

linux-aws-6.8Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

linux-aws-fipsUbuntu

Fixed in:6.8.0-1046.49+fips1USN-8028-4

linux-azureUbuntu

Fixed in:6.8.0-1046.52USN-8074-1

linux-azure-6.8Ubuntu

Fixed in:6.8.0-1051.57~22.04.1USN-8126-1

linux-azure-fipsUbuntu

Fixed in:6.8.0-1046.52+fips1USN-8074-2

linux-fipsUbuntu

Fixed in:6.8.0-100.100+fips1USN-8028-4

linux-gcpUbuntu

Fixed in:6.8.0-1047.50USN-8031-3

linux-gcp-6.8Ubuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

linux-gcp-fipsUbuntu

Fixed in:6.8.0-1047.50+fips1USN-8031-2

linux-gkeUbuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-gkeopUbuntu

Fixed in:6.8.0-1030.33USN-8028-5

linux-hwe-6.8Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-ibmUbuntu

Fixed in:6.8.0-1044.44USN-8028-8

linux-ibm-6.8Ubuntu

Fixed in:6.8.0-1044.44~22.04.1USN-8028-8

linux-image-6.8.0-100-fipsUbuntu

Fixed in:6.8.0-100.100+fips1USN-8028-4

linux-image-6.8.0-100-genericUbuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

Fixed in:6.8.0-100.100USN-8028-1

linux-image-6.8.0-100-generic-64kUbuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

Fixed in:6.8.0-100.100USN-8028-1

linux-image-6.8.0-100-lowlatencyUbuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

Fixed in:6.8.0-100.100.1USN-8052-1

linux-image-6.8.0-100-lowlatency-64kUbuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

Fixed in:6.8.0-100.100.1USN-8052-1

linux-image-6.8.0-1023-xilinxUbuntu

Fixed in:6.8.0-1023.24USN-8052-2

linux-image-6.8.0-1030-gkeopUbuntu

Fixed in:6.8.0-1030.33USN-8028-5

linux-image-6.8.0-1043-gkeUbuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-image-6.8.0-1043-gke-64kUbuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-image-6.8.0-1043-oracleUbuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

Fixed in:6.8.0-1043.44USN-8028-5

linux-image-6.8.0-1043-oracle-64kUbuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

Fixed in:6.8.0-1043.44USN-8028-5

linux-image-6.8.0-1044-ibmUbuntu

Fixed in:6.8.0-1044.44~22.04.1USN-8028-8

Fixed in:6.8.0-1044.44USN-8028-8

linux-image-6.8.0-1046-awsUbuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-6.8.0-1046-aws-64kUbuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-6.8.0-1046-aws-fipsUbuntu

Fixed in:6.8.0-1046.49+fips1USN-8028-4

linux-image-6.8.0-1046-azureUbuntu

Fixed in:6.8.0-1046.52USN-8074-1

linux-image-6.8.0-1046-azure-fipsUbuntu

Fixed in:6.8.0-1046.52+fips1USN-8074-2

linux-image-6.8.0-1046-nvidiaUbuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-6.8.0-1046-nvidia-64kUbuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-6.8.0-1046-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-image-6.8.0-1046-nvidia-lowlatency-64kUbuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-image-6.8.0-1047-gcpUbuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

Fixed in:6.8.0-1047.50USN-8031-3

linux-image-6.8.0-1047-gcp-64kUbuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

Fixed in:6.8.0-1047.50USN-8031-3

linux-image-6.8.0-1047-gcp-fipsUbuntu

Fixed in:6.8.0-1047.50+fips1USN-8031-2

linux-image-6.8.0-1047-raspiUbuntu

Fixed in:6.8.0-1047.51USN-8028-1

linux-image-6.8.0-1051-azureUbuntu

Fixed in:6.8.0-1051.57~22.04.1USN-8126-1

linux-image-6.8.0-2037-raspi-realtimeUbuntu

Fixed in:6.8.0-2037.38USN-8028-3

linux-image-6.8.1-1041-realtimeUbuntu

Fixed in:6.8.1-1041.42~22.04.1USN-8028-2

Fixed in:6.8.1-1041.42USN-8028-3

linux-image-awsUbuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

linux-image-aws-6.8Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-aws-64kUbuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

linux-image-aws-64k-6.8Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-aws-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-aws-fipsUbuntu

Fixed in:6.8.0-1046.49+fips1USN-8028-4

linux-image-aws-fips-6.8Ubuntu

Fixed in:6.8.0-1046.49+fips1USN-8028-4

linux-image-aws-lts-24.04Ubuntu

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-azureUbuntu

Fixed in:6.8.0-1051.57~22.04.1USN-8126-1

linux-image-azure-6.8Ubuntu

Fixed in:6.8.0-1051.57~22.04.1USN-8126-1

Fixed in:6.8.0-1046.52USN-8074-1

linux-image-azure-fipsUbuntu

Fixed in:6.8.0-1046.52+fips1USN-8074-2

linux-image-azure-fips-6.8Ubuntu

Fixed in:6.8.0-1046.52+fips1USN-8074-2

linux-image-azure-lts-24.04Ubuntu

Fixed in:6.8.0-1046.52USN-8074-1

linux-image-fipsUbuntu

Fixed in:6.8.0-100.100+fips1USN-8028-4

linux-image-fips-6.8Ubuntu

Fixed in:6.8.0-100.100+fips1USN-8028-4

linux-image-gcpUbuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

linux-image-gcp-6.8Ubuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

Fixed in:6.8.0-1047.50USN-8031-3

linux-image-gcp-64kUbuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

linux-image-gcp-64k-6.8Ubuntu

Fixed in:6.8.0-1047.50~22.04.2USN-8031-1

Fixed in:6.8.0-1047.50USN-8031-3

linux-image-gcp-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1047.50USN-8031-3

linux-image-gcp-fipsUbuntu

Fixed in:6.8.0-1047.50+fips1USN-8031-2

linux-image-gcp-fips-6.8Ubuntu

Fixed in:6.8.0-1047.50+fips1USN-8031-2

linux-image-gcp-lts-24.04Ubuntu

Fixed in:6.8.0-1047.50USN-8031-3

linux-image-genericUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-image-generic-6.8Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

Fixed in:6.8.0-100.100USN-8028-1

linux-image-generic-64kUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-image-generic-64k-6.8Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

Fixed in:6.8.0-100.100USN-8028-1

linux-image-generic-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-generic-hwe-22.04Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-generic-lpaeUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-image-gkeUbuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-image-gke-6.8Ubuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-image-gke-64kUbuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-image-gke-64k-6.8Ubuntu

Fixed in:6.8.0-1043.48USN-8031-3

linux-image-gkeopUbuntu

Fixed in:6.8.0-1030.33USN-8028-5

linux-image-gkeop-6.8Ubuntu

Fixed in:6.8.0-1030.33USN-8028-5

linux-image-ibmUbuntu

Fixed in:6.8.0-1044.44USN-8028-8

linux-image-ibm-6.8Ubuntu

Fixed in:6.8.0-1044.44~22.04.1USN-8028-8

Fixed in:6.8.0-1044.44USN-8028-8

linux-image-ibm-classicUbuntu

Fixed in:6.8.0-1044.44USN-8028-8

linux-image-ibm-lts-24.04Ubuntu

Fixed in:6.8.0-1044.44USN-8028-8

linux-image-intel-iot-realtimeUbuntu

Fixed in:6.8.1-1041.42USN-8028-3

linux-image-intel-iotgUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-image-kvmUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-image-lowlatencyUbuntu

Fixed in:6.8.0-100.100.1USN-8052-1

linux-image-lowlatency-6.8Ubuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

Fixed in:6.8.0-100.100.1USN-8052-1

linux-image-lowlatency-64kUbuntu

Fixed in:6.8.0-100.100.1USN-8052-1

linux-image-lowlatency-64k-6.8Ubuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

Fixed in:6.8.0-100.100.1USN-8052-1

linux-image-lowlatency-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

linux-image-lowlatency-hwe-22.04Ubuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

linux-image-nvidiaUbuntu

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-nvidia-6.8Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-nvidia-64kUbuntu

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-nvidia-64k-6.8Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

Fixed in:6.8.0-1046.49USN-8028-5

linux-image-nvidia-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

linux-image-nvidia-hwe-22.04Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

linux-image-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-image-nvidia-lowlatency-6.8Ubuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-image-nvidia-lowlatency-64kUbuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-image-nvidia-lowlatency-64k-6.8Ubuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-image-oem-22.04Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-oem-22.04aUbuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-oem-22.04bUbuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-oem-22.04cUbuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-oem-22.04dUbuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-oracleUbuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

linux-image-oracle-6.8Ubuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

Fixed in:6.8.0-1043.44USN-8028-5

linux-image-oracle-64kUbuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

linux-image-oracle-64k-6.8Ubuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

Fixed in:6.8.0-1043.44USN-8028-5

linux-image-oracle-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1043.44USN-8028-5

linux-image-oracle-lts-24.04Ubuntu

Fixed in:6.8.0-1043.44USN-8028-5

linux-image-raspiUbuntu

Fixed in:6.8.0-1047.51USN-8028-1

linux-image-raspi-6.8Ubuntu

Fixed in:6.8.0-1047.51USN-8028-1

linux-image-raspi-realtimeUbuntu

Fixed in:6.8.0-2037.38USN-8028-3

linux-image-raspi-realtime-6.8Ubuntu

Fixed in:6.8.0-2037.38USN-8028-3

linux-image-realtimeUbuntu

Fixed in:6.8.1-1041.42USN-8028-3

linux-image-realtime-6.8.1Ubuntu

Fixed in:6.8.1-1041.42~22.04.1USN-8028-2

Fixed in:6.8.1-1041.42USN-8028-3

linux-image-realtime-hwe-22.04Ubuntu

Fixed in:6.8.1-1041.42~22.04.1USN-8028-2

linux-image-virtualUbuntu

Fixed in:6.8.0-100.100USN-8028-1

linux-image-virtual-6.8Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

Fixed in:6.8.0-100.100USN-8028-1

linux-image-virtual-hwe-22.04Ubuntu

Fixed in:6.8.0-100.100~22.04.1USN-8028-6

linux-image-xilinxUbuntu

Fixed in:6.8.0.1023.24USN-8052-2

linux-image-xilinx-6.8Ubuntu

Fixed in:6.8.0.1023.24USN-8052-2

linux-image-xilinx-zynqmpUbuntu

Fixed in:6.8.0.1023.24USN-8052-2

linux-lowlatencyUbuntu

Fixed in:6.8.0-100.100.1USN-8052-1

linux-lowlatency-hwe-6.8Ubuntu

Fixed in:6.8.0-100.100.1~22.04.1USN-8028-6

linux-nvidiaUbuntu

Fixed in:6.8.0-1046.49USN-8028-5

linux-nvidia-6.8Ubuntu

Fixed in:6.8.0-1046.49~22.04.1USN-8028-5

linux-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1046.49.1USN-8028-7

linux-oracleUbuntu

Fixed in:6.8.0-1043.44USN-8028-5

linux-oracle-6.8Ubuntu

Fixed in:6.8.0-1043.44~22.04.1USN-8028-5

linux-raspiUbuntu

Fixed in:6.8.0-1047.51USN-8028-1

linux-raspi-realtimeUbuntu

Fixed in:6.8.0-2037.38USN-8028-3

linux-realtimeUbuntu

Fixed in:6.8.1-1041.42USN-8028-3

linux-realtime-6.8Ubuntu

Fixed in:6.8.1-1041.42~22.04.1USN-8028-2

linux-xilinxUbuntu

Fixed in:6.8.0-1023.24USN-8052-2

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Patch5

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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 2025-11-24.