CVE-2026-89995

dma-direct: return struct page from dma_direct_alloc_from_pool()

HIGH
8.8
CVSS Score
Published: September 16, 2026 at 10:33 AM UTC
Updated: October 21, 2026 at 01:20 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: dma-direct: return struct page from dma_direct_alloc_from_pool() Commit 5b138c534fda ("dma-direct: factor out a dma_direct_alloc_from_pool helper") changed dma_direct_alloc_from_pool() to return the CPU address from dma_alloc_from_pool(). That fits dma_direct_alloc(), but dma_direct_alloc_pages() also uses the helper and expects a struct page *. Fix this by making dma_direct_alloc_from_pool() return the struct page * again, and pass the CPU address back through an out-parameter for the dma_direct_alloc() caller.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.105b138c534fda57c2ebc1e6de72578aa1d70788a6
Vendor states this is fixed in 408ff2d5bf555bd3f4c84a2edb95c0690bf9edc8 (fixed)
Vendor states this is fixed in 94a04ad732c9f8b9554270fc4038a06737de5c22 (fixed)
Vendor states this is fixed in c3fdb94da43ff23287f85664174c45c45e881a3f (fixed)
Vendor states this is fixed in feeb2ef775081a6c188cdd10e7a45369a07ce531 (fixed)
Vendor states this is fixed in 5.10 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.51 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.5 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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