7.8

CVE-2022-2586

Warning
Exploit

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version <= 5.19.17
Linux ≫ Linux Kernel Version6.0 Update-
Canonical ≫ Ubuntu Linux Version14.04 SwEditionesm
Canonical ≫ Ubuntu Linux Version16.04 SwEditionesm
Canonical ≫ Ubuntu Linux Version18.04 SwEditionesm
Canonical ≫ Ubuntu Linux Version20.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version22.04 SwEditionlts

26.06.2024: CISA Known Exploited Vulnerabilities (KEV) Catalog

Linux Kernel Use-After-Free Vulnerability

Vulnerability

Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.

Description

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 1.59% 0.81
CVSS Metriken
Source 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
security@ubuntu.com 5.3 1 4.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.