CVE-2022-48732

HIGH
Published Jun 20, 2024 Modified Nov 21, 2024 CWE-193

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.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-193 CWE-193

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/1b777d4d9e383d2744fc9b3a09af6ec1893c8b1a https://git.kernel.org/stable/c/909d3ec1bf9f0ec534bfc081b77c0836fea7b0e2 https://git.kernel.org/stable/c/acc887ba88333f5fec49631f12d8cc7ebd95781c https://git.kernel.org/stable/c/b2a21669ee98aafc41c6d42ef15af4dab9e6e882 https://git.kernel.org/stable/c/d4b746e60fd8eaa8016e144223abe91158edcdad https://git.kernel.org/stable/c/d877e814a62b7de9069aeff8bc1d979dfc996e06 https://git.kernel.org/stable/c/e7c36fa8a1e63b08312162179c78a0c7795ea369 https://git.kernel.org/stable/c/f071d9fa857582d7bd77f4906691f73d3edeab73 https://git.kernel.org/stable/c/1b777d4d9e383d2744fc9b3a09af6ec1893c8b1a https://git.kernel.org/stable/c/909d3ec1bf9f0ec534bfc081b77c0836fea7b0e2 https://git.kernel.org/stable/c/acc887ba88333f5fec49631f12d8cc7ebd95781c https://git.kernel.org/stable/c/b2a21669ee98aafc41c6d42ef15af4dab9e6e882 https://git.kernel.org/stable/c/d4b746e60fd8eaa8016e144223abe91158edcdad https://git.kernel.org/stable/c/d877e814a62b7de9069aeff8bc1d979dfc996e06 https://git.kernel.org/stable/c/e7c36fa8a1e63b08312162179c78a0c7795ea369 https://git.kernel.org/stable/c/f071d9fa857582d7bd77f4906691f73d3edeab73

Frequently Asked Questions

What is CVE-2022-48732? +
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. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2022-48732? +
CVE-2022-48732 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2022-48732? +
CVE-2022-48732 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2022-48732? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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