CVE-2022-48732 drm/nouveau: fix off by one in BIOS boundary checking

What is CVE-2022-48732?

CVE-2022-48732 is a high-severity vulnerability in Linux kernel, published on 20 Jun 2024.

Official description

In the Linux kernel, the following vulnerability has been resolved:

drm/nouveau: fix off by one in BIOS boundary checking

Bounds checking when parsing init scripts embedded in the BIOS reject access to the last byte. This causes driver initialization to fail on Apple eMac's with GeForce 2 MX GPUs, leaving the system with no working console.

This is probably only seen on OpenFirmware machines like PowerPC Macs because the BIOS image provided by OF is only the used parts of the ROM, not a power-of-two blocks read from PCI directly so PCs always have empty bytes at the end that are never accessed.

Weakness: CWE-193

Which versions are affected by CVE-2022-48732?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-48732?

Upgrade to a fixed version.

Is CVE-2022-48732 being exploited?

There is no known exploitation of CVE-2022-48732 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 DEBIAN-CVE-2022-48732, GHSA-vjh8-wgcx-46j4, UBUNTU-CVE-2022-48732.