Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bfa83a9e03cf8d501c6272999843470afecb32ed before 3e5082b1c66c7783fbcd79b5b178573230e528ff; affected bfa83a9e03cf8d501c6272999843470afecb32ed before 539ca5dcbc91134bbe2c45677811c31d8b030d2d; affected bfa83a9e03cf8d501c6272999843470afecb32ed before 41b74e95f297ac360ca7ed6bf200100717cb6c45; affected bfa83a9e03cf8d501c6272999843470afecb32ed before 992e4ff7116a77968039277b5d6aaa535c2f2184; affected bfa83a9e03cf8d501c6272999843470afecb32ed before f0950402e8c76e7dcb08563f1b4e8000fbc62455 |
| Linux / Linux | affected 2.6.15; unaffected 0 before 2.6.15; unaffected 5.4.231 through 5.4.*; unaffected 5.10.166 through 5.10.*; unaffected 5.15.91 through 5.15.*; unaffected 6.1.9 through 6.1.*; unaffected 6.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff
- https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d
- https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45
- https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184
- https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455