Out-of-bounds Read Affecting kernel package, versions <0:4.14.268-205.500.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNEL-7708148
- published 20 Aug 2024
- disclosed 16 Jul 2024
Introduced: 16 Jul 2024
CVE-2022-48805 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.268-205.500.amzn2 or higher.
This issue was patched in ALAS2-2022-1761.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
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.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48805
- 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