CVE-2022-50213

Summary

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: do not allow SET_ID to refer to another table

When doing lookups for sets on the same batch by using its ID, a set from a different table can be used.

Then, when the table is removed, a reference to the set may be kept after the set is freed, leading to a potential use-after-free.

When looking for sets by ID, use the table that was used for the lookup by name, and only return sets belonging to that same table.

This fixes CVE-2022-2586, also reported as ZDI-CAN-17470.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < 77d3b5038b7462318f5183e2ad704b01d57215a2affected
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < fab2f61cc3b0e441b1749f017cfee75f9bbaded7affected
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < 1a4b18b1ff11ba26f9a852019d674fde9d1d1cffaffected
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < faafd9286f1355c76fe9ac3021c280297213330eaffected
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6faffected
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < 0d07039397527361850c554c192e749cfc879ea9affected
LinuxLinux958bee14d0718ca7a5002c0f48a099d1d345812a < 470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2affected
LinuxLinux3.16affected
LinuxLinux0 < 3.16unaffected
LinuxLinux4.19.256 <= 4.19.*unaffected
LinuxLinux5.4.211 <= 5.4.*unaffected
LinuxLinux5.10.137 <= 5.10.*unaffected
LinuxLinux5.15.61 <= 5.15.*unaffected
LinuxLinux5.18.18 <= 5.18.*unaffected
LinuxLinux5.19.2 <= 5.19.*unaffected
LinuxLinux6.0 <= *unaffected

Weaknesses

References