7.8

CVE-2022-50213

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.16 < 4.19.256
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.211
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.137
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.61
Linux ≫ Linux Kernel Version >= 5.16 < 5.18.18
Linux ≫ Linux Kernel Version >= 5.19 < 5.19.2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.098
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/77d3b5038b7462318f5183e2ad704b01d57215a2
Patch
https://git.kernel.org/stable/c/fab2f61cc3b0e441b1749f017cfee75f9bbaded7
Patch
https://git.kernel.org/stable/c/1a4b18b1ff11ba26f9a852019d674fde9d1d1cff
Patch
https://git.kernel.org/stable/c/faafd9286f1355c76fe9ac3021c280297213330e
Patch
https://git.kernel.org/stable/c/f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6f
Patch
https://git.kernel.org/stable/c/0d07039397527361850c554c192e749cfc879ea9
Patch
https://git.kernel.org/stable/c/470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2
Patch