// For flags

CVE-2023-6111

Use-after-free in Linux kernel's netfilter: nf_tables component

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

The function nft_trans_gc_catchall did not remove the catchall set element from the catchall_list when the argument sync is true, making it possible to free a catchall set element many times.

We recommend upgrading past commit 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630.

Una vulnerabilidad de use-after-free en el componente netfilter: nf_tables del kernel de Linux puede explotarse para lograr una escalada de privilegios local. La función nft_trans_gc_catchall no eliminó el elemento del conjunto general de catchall_list cuando el argumento sync es verdadero, lo que hace posible liberar un elemento del conjunto general muchas veces. Recomendamos actualizar más allá del commit 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630.

*Credits: Lonial Kong
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-11-13 CVE Reserved
  • 2023-11-14 CVE Published
  • 2023-11-18 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
  • CAPEC-233: Privilege Escalation
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.6 < 6.7
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6 < 6.7"
-
Affected