CVE-2022-48690

ice: Fix DMA mappings leak

Description

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

N/A

CVSS

Severity:

EPSS 0.06%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/07f40e9f0ff342eb3e97d5c544783b7cb641689c
https://git.kernel.org/stable/c/7e753eb675f0523207b184558638ee2eed6c9ac2

Frequently Asked Questions

What is the severity of CVE-2022-48690?: CVE-2022-48690 has not yet been assigned a CVSS score.
How to fix CVE-2022-48690?: To fix CVE-2022-48690, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-48690 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-48690 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-48690?: CVE-2022-48690 affects Linux Linux, Linux Linux.

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