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CVE-2025-71071

28
FAUCET Score

CVE-2025-71071 is a use-after-free vulnerability in the MediaTek IOMMU driver within the Linux kernel. This flaw occurs when the driver prematurely drops references to "larb" devices during probe deferral, potentially leading to memory corruption. While no CVSS score is available, its FAUCET Risk Score is 39/100, indicating a moderate risk. There is no evidence of active exploitation, public exploit code, or inclusion in the CISA KEV catalog, though it has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.16, < 6.1CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.1.2, < 6.1.160CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.0.16, < 6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.1.2, < 6.1.160CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2.1, < 6.6.120CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.13%
Probability of exploitation in next 30 days
EPSS Percentile
2.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0013 is in the 12th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (41)

ubuntupatch availablevia ubuntu_usn
Product: linux-nvidia-tegra (noble)Fixed in: 6.8.0-1022.22
ubuntupatch availablevia ubuntu_usn
Product: linux-nvidia-lowlatency (noble)Fixed in: 6.8.0-1051.54.1
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp-6.8 (jammy)Fixed in: 6.8.0-1054.57~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-xilinx (noble)Fixed in: 6.8.0-1029.30
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-fips (noble)Fixed in: 6.8.0-1054.60+fips1
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (noble)Fixed in: 6.8.0-1054.60
ubuntupatch availablevia ubuntu_usn
Product: linux-raspi (questing)Fixed in: 6.17.0-1014.14
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-6.17 (noble)Fixed in: 6.17.0-1013.13~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-oem-6.17 (noble)Fixed in: 6.17.0-1020.20
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (questing)Fixed in: 6.17.0-1013.13
ubuntupatch availablevia ubuntu_usn
Product: linux-aws-6.8 (jammy)Fixed in: 6.8.0-1052.55~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-lowlatency-hwe-6.8 (jammy)Fixed in: 6.8.0-110.110.1~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux (noble)Fixed in: 6.8.0-110.110
ubuntupatch availablevia ubuntu_usn
Product: linux-aws (noble)Fixed in: 6.8.0-1052.55
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp (noble)Fixed in: 6.8.0-1054.57
ubuntupatch availablevia ubuntu_usn
Product: linux-gke (noble)Fixed in: 6.8.0-1050.56
ubuntupatch availablevia ubuntu_usn
Product: linux-gkeop (noble)Fixed in: 6.8.0-1037.40
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm (noble)Fixed in: 6.8.0-1051.51
ubuntupatch availablevia ubuntu_usn
Product: linux-lowlatency (noble)Fixed in: 6.8.0-110.110.1
ubuntupatch availablevia ubuntu_usn
Product: linux (questing)Fixed in: 6.17.0-22.22
ubuntupatch availablevia ubuntu_usn
Product: linux-realtime (questing)Fixed in: 6.17.0-1010.11
ubuntupatch availablevia ubuntu_usn
Product: linux-nvidia-6.8 (jammy)Fixed in: 6.8.0-1051.54~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-nvidia (noble)Fixed in: 6.8.0-1051.54
ubuntupatch availablevia ubuntu_usn
Product: linux-aws-fips (noble)Fixed in: 6.8.0-1052.55+fips1
ubuntupatch availablevia ubuntu_usn
Product: linux-fips (noble)Fixed in: 6.8.0-110.110+fips2
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp-fips (noble)Fixed in: 6.8.0-1054.57+fips1
ubuntupatch availablevia ubuntu_usn
Product: linux-realtime-6.8 (jammy)Fixed in: 6.8.1-1047.48~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-realtime (noble)Fixed in: 6.8.1-1047.48
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp-6.17 (noble)Fixed in: 6.17.0-1012.12~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp (questing)Fixed in: 6.17.0-1012.12
ubuntupatch availablevia ubuntu_usn
Product: linux-raspi-realtime (noble)Fixed in: 6.8.0-2042.43
ubuntupatch availablevia ubuntu_usn
Product: linux-oracle-6.8 (jammy)Fixed in: 6.8.0-1049.50~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-oracle (noble)Fixed in: 6.8.0-1049.50
ubuntupatch availablevia ubuntu_usn
Product: linux-hwe-6.8 (jammy)Fixed in: 6.8.0-110.110~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm-6.8 (jammy)Fixed in: 6.8.0-1051.51~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-raspi (noble)Fixed in: 6.8.0-1052.56
ubuntupatch availablevia ubuntu_usn
Product: linux-aws-6.17 (noble)Fixed in: 6.17.0-1012.12~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-hwe-6.17 (noble)Fixed in: 6.17.0-22.22~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-oracle-6.17 (noble)Fixed in: 6.17.0-1011.11~24.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-aws (questing)Fixed in: 6.17.0-1012.12
ubuntupatch availablevia ubuntu_usn
Product: linux-oracle (questing)Fixed in: 6.17.0-1011.11

Vendor Advisories (19)

ubuntuUSN-8265-1

Linux kernel (NVIDIA Tegra) vulnerabilities

May 11, 2026
ubuntuUSN-8261-1

Linux kernel (Xilinx) vulnerabilities

May 7, 2026
ubuntuUSN-8260-1

Linux kernel (Azure FIPS) vulnerabilities

May 7, 2026
ubuntuUSN-8258-1

Linux kernel (Azure) vulnerabilities

May 7, 2026
ubuntuUSN-8257-1

Linux kernel (Raspberry Pi) vulnerabilities

May 7, 2026
ubuntuUSN-8245-1

Linux kernel vulnerabilities

May 7, 2026
ubuntuUSN-8179-4

Linux kernel (GCP) vulnerabilities

May 7, 2026
ubuntuUSN-8185-2

Linux kernel (Low Latency NVIDIA) vulnerabilities

Apr 28, 2026
ubuntuUSN-8204-1

Linux kernel (Raspberry Pi Real-time) vulnerabilities

Apr 23, 2026
ubuntuUSN-8203-1

Linux kernel (Oracle) vulnerabilities

Apr 23, 2026
ubuntuUSN-8179-3

Linux kernel vulnerabilities

Apr 23, 2026
ubuntuUSN-8183-2

Linux kernel vulnerabilities

Apr 23, 2026
ubuntuUSN-8185-1

Linux kernel (NVIDIA) vulnerabilities

Apr 17, 2026
ubuntuUSN-8179-2

Linux kernel (FIPS) vulnerabilities

Apr 17, 2026
ubuntuUSN-8184-1

Linux kernel (Real-time) vulnerabilities

Apr 17, 2026
ubuntuUSN-8183-1

Linux kernel (GCP) vulnerabilities

Apr 17, 2026
ubuntuUSN-8179-1

Linux kernel vulnerabilities

Apr 16, 2026
ubuntuUSN-8177-1

Linux kernel vulnerabilities

Apr 16, 2026
redhatCVE-2025-71071

kernel: iommu/mediatek: fix use-after-free on probe deferral

Jan 13, 2026

References

git.kernel.org / stable/c/1ef70a0b104ae8011811f60bcfaa55ff49385171
Patch
git.kernel.org / stable/c/5c04217d06a1161aaf36267e9d971ab6f847d5a7
Patch
git.kernel.org / stable/c/896ec55da3b90bdb9fc04fedc17ad8c359b2eee5
Patch
git.kernel.org / stable/c/de83d4617f9fe059623e97acf7e1e10d209625b5
Patch
git.kernel.org / stable/c/f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a
Patch