CVE-2022-48805

HIGH
Published Jul 16, 2024 Modified Mar 6, 2025 CWE-125

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.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/1668781ed24da43498799aa4f65714a7de201930 https://git.kernel.org/stable/c/57bc3d3ae8c14df3ceb4e17d26ddf9eeab304581 https://git.kernel.org/stable/c/63f0cfb36c1f1964a59ce544156677601e2d8740 https://git.kernel.org/stable/c/711b6bf3fb052f0a6b5b3205d50e30c0c2980382 https://git.kernel.org/stable/c/758290defe93a865a2880d10c5d5abd288b64b5d https://git.kernel.org/stable/c/9681823f96a811268265f35307072ad80713c274 https://git.kernel.org/stable/c/a0fd5492ee769029a636f1fb521716b022b1423d https://git.kernel.org/stable/c/ffd0393adcdcefab7e131488e10dcfde5e02d6eb https://git.kernel.org/stable/c/1668781ed24da43498799aa4f65714a7de201930 https://git.kernel.org/stable/c/57bc3d3ae8c14df3ceb4e17d26ddf9eeab304581 https://git.kernel.org/stable/c/63f0cfb36c1f1964a59ce544156677601e2d8740 https://git.kernel.org/stable/c/711b6bf3fb052f0a6b5b3205d50e30c0c2980382 https://git.kernel.org/stable/c/758290defe93a865a2880d10c5d5abd288b64b5d https://git.kernel.org/stable/c/9681823f96a811268265f35307072ad80713c274 https://git.kernel.org/stable/c/a0fd5492ee769029a636f1fb521716b022b1423d https://git.kernel.org/stable/c/ffd0393adcdcefab7e131488e10dcfde5e02d6eb

Frequently Asked Questions

What is CVE-2022-48805? +
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. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2022-48805? +
CVE-2022-48805 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2022-48805? +
CVE-2022-48805 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2022-48805? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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