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ubuntucveUbuntu.comUB:CVE-2024-43881
HistoryAug 21, 2024 - 12:00 a.m.

CVE-2024-43881

2024-08-2100:00:00
ubuntu.com
ubuntu.com
1
linux kernel
vulnerability
ath12k module
data leakage
wifi
packets
dma direction
memory allocation
private information
qcn9274
pci wlan
silicon

AI Score

7.2

Confidence

Low

In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: change DMA direction while mapping reinjected packets
For fragmented packets, ath12k reassembles each fragment as a normal
packet and then reinjects it into HW ring. In this case, the DMA
direction should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise,
an invalid payload may be reinjected into the HW and
subsequently delivered to the host.
Given that arbitrary memory can be allocated to the skb buffer,
knowledge about the data contained in the reinjected buffer is lacking.
Consequently, there’s a risk of private information being leaked.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1

AI Score

7.2

Confidence

Low