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.
Published 2024-01-08 18:15:45
Updated 2024-06-27 01:00:01
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Products affected by CVE-2022-2586

CVE-2022-2586 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Linux Kernel Use-After-Free Vulnerability
CISA required action:
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
CISA description:
Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.
Notes:
This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://seclists.org/oss-sec/2022/q3/131; https://nvd.nist.gov/vuln/detail/CVE-2022-2586
Added on 2024-06-26 Action due date 2024-07-17

Exploit prediction scoring system (EPSS) score for CVE-2022-2586

0.55%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-2586

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST 2024-01-12
5.3
MEDIUM CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
1.0
4.2
Canonical Ltd. 2024-01-08

CWE ids for CVE-2022-2586

  • 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@ubuntu.com (Secondary)

References for CVE-2022-2586

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