# CVE-2022-48805: linux: In the Linux kernel, the following vulnerability has been resolved:  net: usb: ax88179_178a: Fix out-of-bounds access...

CVE-2022-48805 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48805, released July 16, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-48805
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0032
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 16, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: usb: ax88179_178a: Fix out-of-bounds accesses in RX fixup  ax88179_rx_fixup() contains several out-of-bounds accesses that can be triggered by a malicious (or defective) USB device, in particular:   - The metadata array (hdr_off..hdr_off+2*pkt_cnt) can be out of bounds,    causing OOB reads and (on big-endian systems) OOB endianness flips.  - A packet can overlap the metadata array, causing a later OOB    endianness flip to corrupt data used by a cloned SKB that has already    been handed off into the network stack.  - A packet SKB can be constructed whose tail is far beyond its end,    causing out-of-bounds heap data to be considered part of the SKB's    data.  I have tested that this can be used by a malicious USB device to send a bogus ICMPv6 Echo Request and receive an ICMPv6 Echo Reply in response that contains random kernel heap data. It's probably also possible to get OOB writes from this on a little-endian system somehow - maybe by triggering skb_cow() via IP options processing -, but I haven't tested that.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.10-1 | [DEBIAN-CVE-2022-48805](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48805.md) | Jul 16, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.10-1 | [DEBIAN-CVE-2022-48805](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48805.md) | Jul 16, 2024 |
| Linux | linux Debian 14 | 5.16.10-1 | [DEBIAN-CVE-2022-48805](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48805.md) | Jul 16, 2024 |

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