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CVE-2025-71287: memory: mtk-smi: fix device leak on larb probe

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-10-14
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: memory: mtk-smi: fix device leak on larb probe Make sure to drop the reference taken when looking up the SMI device during larb probe on late probe failure (e.g. probe deferral) and on driver unbind.

Affected products

• Linux kernel: from 4.6 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17; from 6.19 before 6.19.6 — fixed in 5.15.203, 6.1.167, 6.12.77, 6.18.17, 6.19.6, 6.6.130

How to fix

Upgrade to a fixed version: Linux kernel 5.15.203, 6.1.167, 6.12.77, 6.18.17. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04057b86fdac3d4847913a97dc6552c0bff9b85e
• https://git.kernel.org/stable/c/1288bb394d464975cea18f69940f206e235e0fe7
• https://git.kernel.org/stable/c/1f23a48ff2b8ab47e514f7c84a4b1dbf9b848168
• https://git.kernel.org/stable/c/357e16a7fc9c1fef2ea37dce9bb6b9bcb1d1687d
• https://git.kernel.org/stable/c/9dae65913b32d05dbc8ff4b8a6bf04a0e49a8eb6
• https://git.kernel.org/stable/c/b9eccd59697f7e1cb9a714501d9af826e7f7e073
• https://git.kernel.org/stable/c/f69535b77fa0518ad39870c00dd2995439ed5c34

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