CVE-2022-50213
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0d07039397527361850c554c192e749cfc879ea9Patch
- https://git.kernel.org/stable/c/1a4b18b1ff11ba26f9a852019d674fde9d1d1cffPatch
- https://git.kernel.org/stable/c/470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2Patch
- https://git.kernel.org/stable/c/77d3b5038b7462318f5183e2ad704b01d57215a2Patch
- https://git.kernel.org/stable/c/f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6fPatch
- https://git.kernel.org/stable/c/faafd9286f1355c76fe9ac3021c280297213330ePatch
- https://git.kernel.org/stable/c/fab2f61cc3b0e441b1749f017cfee75f9bbaded7Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.