CVE-2021-46283

 

Published at: - 11-01-2022 11:15

Last modified: - 26-10-2022 01:44

Total changes: - 5

Description

nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel before 5.12.13 allows local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad9f151e560b016b6ad3280b48e42fa11e1a5440
• https://syzkaller.appspot.com/bug?id=22c3987f75a7b90e238a26b5a5920525c2d1f345
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13

 

Keywords

NVD

 

CVE-2021-46283

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures