# CVE-2022-48690: linux: In the Linux kernel, the following vulnerability has been resolved:  ice: Fix DMA mappings leak  Fix leak, when user...

CVE-2022-48690 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48690, released May 3, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48690
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 3, 2024

## 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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.19.11-1 | [DEBIAN-CVE-2022-48690](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48690.md) | May 3, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.19.11-1 | [DEBIAN-CVE-2022-48690](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48690.md) | May 3, 2024 |
| Linux | linux Debian 14 | 5.19.11-1 | [DEBIAN-CVE-2022-48690](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48690.md) | May 3, 2024 |

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