CVE-2022-48690
Assigner: Linux
Published: 2024-05-03T17:44:31.180Z
State: PUBLISHED
descriptions: value: 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
affected: product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 617f3e1b588c
lessThan: 07f40e9f0ff3
status: affected
versionType: git
version: 617f3e1b588c
lessThan: 7e753eb675f0
status: affected
versionType: git
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions: version: 5.16
status: affected
version: 0
lessThan: 5.16
status: unaffected
versionType: custom
version: 5.19.9
lessThanOrEqual: 5.19.*
status: unaffected
versionType: custom
version: 6.0
lessThanOrEqual: *
status: unaffected
versionType: original_commit_for_fix
title: ice: Fix DMA mappings leak
x_generator: engine: bippy-d175d3acf727