Tracker / CVE-2022-48757
CVE-2022-48757
High 7.1
In the Linux kernel, the following vulnerability has been resolved: net: fix information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new `packet_type` added by this packet socket by reading `/proc/net/ptype` file. This is minor information leakage as packet socket is namespace aware. Add a net pointer in `packet_type` to keep the net namespace of of corresponding packet socket. In `ptype_seq_show`, this net pointer must be checked when it is not NULL.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.26 → 4.4.302 |
| linux | linux_kernel · 4.10 → 4.14.265 |
| linux | linux_kernel · 4.15 → 4.19.228 |
| linux | linux_kernel · 4.20 → 5.4.176 |
| linux | linux_kernel · 4.5 → 4.9.300 |
| linux | linux_kernel · 5.11 → 5.15.19 |
| linux | linux_kernel · 5.16 → 5.16.5 |
| linux | linux_kernel · 5.5 → 5.10.96 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.