Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.15, < 5.4.231 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ffPatch
- https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45Patch
- https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2dPatch
- https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184Patch
- https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455Patch
FAQ
What is CVE-2023-53000?
CVE-2023-53000 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 vali...
How severe is CVE-2023-53000?
CVE-2023-53000 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-53000?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.