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nvd416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2022-48690
HistoryMay 03, 2024 - 6:15 p.m.

CVE-2022-48690

2024-05-0318:15:08
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
1
linux kernel
vulnerability
cve-2022-48690
ice
dma mappings
ring parameters
fix
buffer reallocation
rx queues
ethtool
ethtool commands

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.2%

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

ice: Fix DMA mappings leak

Fix leak, when user changes ring parameters.
During reallocation of RX buffers, new DMA mappings are created for
those buffers. New buffers with different RX ring count should
substitute older ones, but those buffers were freed in ice_vsi_cfg_rxq
and reallocated again with ice_alloc_rx_buf. kfree on rx_buf caused
leak of already mapped DMA.
Reallocate ZC with xdp_buf struct, when BPF program loads. Reallocate
back to rx_buf, when BPF program unloads.
If BPF program is loaded/unloaded and XSK pools are created, reallocate
RX queues accordingly in XDP_SETUP_XSK_POOL handler.

Steps for reproduction:
while :
do
for ((i=0; i<=8160; i=i+32))
do
ethtool -G enp130s0f0 rx $i tx $i
sleep 0.5
ethtool -g enp130s0f0
done
done

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.2%