// For flags

CVE-2024-1085

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 nft_setelem_catchall_deactivate() function checks whether the catch-all set element is active in the current generation instead of the next generation before freeing it, but only flags it inactive in the next generation, making it possible to free the element multiple times, leading to a double free vulnerability.

We recommend upgrading past commit b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7.

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_setelem_catchall_deactivate() comprueba si el elemento del conjunto general está activo en la generación actual en lugar de en la siguiente generación antes de liberarlo, pero solo lo marca como inactivo en la siguiente generación, lo que permite liberar el elemento varias veces, lo que lleva a una vulnerabilidad double free. Recomendamos actualizar la confirmación anterior b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7.

A double-free flaw was found in how the Linux kernel's NetFilter system marks whether a catch-all element is enabled. A local user could use this flaw to crash the system.

*Credits: Lonial Con
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2024-01-30 CVE Reserved
  • 2024-01-31 CVE Published
  • 2024-02-08 EPSS Updated
  • 2024-08-01 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"
 >= 5.13 < 5.15.148
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.15.148"
-
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 5.16 < 6.1.75
Search vendor "Linux" for product "Linux Kernel" and version " >= 5.16 < 6.1.75"
-
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.2 < 6.6.14
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.6.14"
-
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 6.7 < 6.7.2
Search vendor "Linux" for product "Linux Kernel" and version " >= 6.7 < 6.7.2"
-
Affected