CVE-2026-74423: accel/amdxdna: Fix leak when pinning ubuf pages

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix leak when pinning ubuf pages When pin_user_pages_fast() returns fewer pages than requested, the pages that were successfully pinned are not released, leading to a leak. Fix this by unpinning any partially pinned pages before returning failure.

Affected products

Linux kernel: 6.18 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/5b24e0903c58cdfd8ebfecb6ac5c5bacfd06e4e7
https://git.kernel.org/stable/c/68dc52f308a17c3103a349f722dd5dea32c50a88
https://git.kernel.org/stable/c/d946347edc4f0a7b846325323d77e936a4c90d0f

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