Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
In the Linux kernel, the following vulnerability has been resolved:netfilter: nf_tables: do not allow CHAIN_ID to refer to another tableWhen doing lookups for chains on the same batch by using its ID, a chainfrom a different table can be used. If a rule is added to a table butrefers to a chain in a different table, it will be linked to the chain intable2, but would have expressions referring to objects in table1.Then, when table1 is removed, the rule will not be removed as its linked toa chain in table2. When expressions in the rule are processed or removed,that will lead to a use-after-free.When looking for chains by ID, use the table that was used for the lookupby name, and only return chains belonging to that same table.
No PoCs from references.
- https://github.com/ARPSyndicate/cve-scores