dma-direct: return struct page from dma_direct_alloc_from_pool()
CVE-2026-89995 · published 16 Sept 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-89995?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 5b138c534fda57c2ebc1e6de72578aa1d70788a6 to < 7801e616fbe3661f9471b2e9bfcb1ed35460bf16, 5b138c534fda57c2ebc1e6de72578aa1d70788a6 to < c3fdb94da43ff23287f85664174c45c45e881a3f, 5b138c534fda57c2ebc1e6de72578aa1d70788a6 to < 408ff2d5bf555bd3f4c84a2edb95c0690bf9edc8, 5b138c534fda57c2ebc1e6de72578aa1d70788a6 to < feeb2ef775081a6c188cdd10e7a45369a07ce531
- Linux Linux: 5.10
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/7801e616fbe3661f9471b2e9bfcb1ed35460bf16
- git.kernel.org/stable/c/c3fdb94da43ff23287f85664174c45c45e881a3f
- git.kernel.org/stable/c/408ff2d5bf555bd3f4c84a2edb95c0690bf9edc8
- git.kernel.org/stable/c/feeb2ef775081a6c188cdd10e7a45369a07ce531
- git.kernel.org/stable/c/94a04ad732c9f8b9554270fc4038a06737de5c22
Merged from CVE List. Last updated 26 Oct 2026. All vulnerabilities · RSS · JSON