CVE-2021-33033

CVE Details

Release Date:	2021-05-14
Impact:	None	What is this?

Description

The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.

See more information about CVE-2021-33033 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel)	ELSA-2021-2725	2021-07-21
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9349	2021-07-12
Oracle Linux version 7 (kernel-uek)	ELSA-2021-9362	2021-07-16
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9351	2021-07-12
Oracle Linux version 7 (kernel-uek-container)	ELSA-2021-9363	2021-07-16
Oracle Linux version 8 (kernel-uek)	ELSA-2021-9362	2021-07-16
Oracle Linux version 8 (kernel-uek-container)	ELSA-2021-9363	2021-07-16