CVE-2026-53159 misc: fastrpc: fix DMA address corruption due to find_vma misuse
An integer underflow in the Linux kernel's fastrpc driver corrupts DMA addresses, potentially allowing data modification or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-53159?
CVE-2026-53159 is a high-severity vulnerability in Linux kernel, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: fix DMA address corruption due to find_vma misuse
fastrpc_get_args() uses find_vma() to look up the VMA for a user-provided pointer and compute a DMA address offset. When the address falls in a gap before the returned VMA, (ptr & PAGE_MASK) - vma->vm_start underflows, corrupting the DMA address sent to the DSP.
Replace find_vma() with vma_lookup(), which returns NULL when the address is not contained within any VMA.
Which versions are affected by CVE-2026-53159?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53159?
Apply the vendor's patch.
Is CVE-2026-53159 being exploited?
There is no known exploitation of CVE-2026-53159 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-53159, DEBIAN-CVE-2026-53159, GHSA-3439-cqxh-wp94, ROOT-OS-DEBIAN-11-CVE-2026-53159, ROOT-OS-DEBIAN-12-CVE-2026-53159, ROOT-OS-UBUNTU-2204-CVE-2026-53159 and 2 more.