Tracker / CVE-2023-53000
CVE-2023-53000
High 7.8
In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.15 → 5.4.231 |
| linux | linux_kernel · 5.11 → 5.15.91 |
| linux | linux_kernel · 5.16 → 6.1.9 |
| linux | linux_kernel · 5.5 → 5.10.166 |
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.