CVE-2026-23431 spi: amlogic-spisg: Fix memory leak in aml_spisg_probe()

What is CVE-2026-23431?

CVE-2026-23431 is a medium-severity denial of service vulnerability in Linux kernel, published on 3 Apr 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: amlogic-spisg: Fix memory leak in aml_spisg_probe()

In aml_spisg_probe(), ctlr is allocated by spi_alloc_target()/spi_alloc_host(), but fails to call spi_controller_put() in several error paths. This leads to a memory leak whenever the driver fails to probe after the initial allocation.

Convert to use devm_spi_alloc_host()/devm_spi_alloc_target() to fix the memory leak.

Weakness: CWE-401

Which versions are affected by CVE-2026-23431?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-23431?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-23431 being exploited?

There is no known exploitation of CVE-2026-23431 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 BELL-CVE-2026-23431, DEBIAN-CVE-2026-23431, GHSA-fx5r-48pf-8f7w, UBUNTU-CVE-2026-23431.