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CVE-2023-52834

Disclosure Date: May 21, 2024
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Description

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

atl1c: Work around the DMA RX overflow issue

This is based on alx driver commit 881d0327db37 (“net: alx: Work around
the DMA RX overflow issue”).

The alx and atl1c drivers had RX overflow error which was why a custom
allocator was created to avoid certain addresses. The simpler workaround
then created for alx driver, but not for atl1c due to lack of tester.

Instead of using a custom allocator, check the allocated skb address and
use skb_reserve() to move away from problematic 0x…fc0 address.

Tested on AR8131 on Acer 4540.

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General Information

Vendors

  • Linux

Products

  • Linux
Technical Analysis