CVE-2022-48732 Information

Jun 21, 2024 cve

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.

Reference

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

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