CVE-2026-46296 spi: s3c64xx: fix NULL-deref on driver unbind

What is CVE-2026-46296?

CVE-2026-46296 is a medium-severity vulnerability in Linux kernel, published on 8 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:

spi: s3c64xx: fix NULL-deref on driver unbind

A change moving DMA channel allocation from probe() back to s3c64xx_spi_prepare_transfer() failed to remove the corresponding deallocation from remove().

Drop the bogus DMA channel release from remove() to avoid triggering a NULL-pointer dereference on driver unbind.

This issue was flagged by Sashiko when reviewing a controller deregistration fix.

Weakness: CWE-476

Which versions are affected by CVE-2026-46296?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-46296?

Apply the vendor's patch.

Is CVE-2026-46296 being exploited?

There is no known exploitation of CVE-2026-46296 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-89648, BELL-CVE-2026-46296, DEBIAN-CVE-2026-46296, GHSA-vvjj-6m9v-rg8g, ROOT-OS-DEBIAN-12-CVE-2026-46296, UBUNTU-CVE-2026-46296.