CVE-2021-32606 Information

Description

In the Linux kernel 5.11 through 5.12.2 isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)

CVSS Vector

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

Reference

https://www.openwall.com/lists/oss-security/2021/05/11/16 http://www.openwall.com/lists/oss-security/2021/05/12/1 http://www.openwall.com/lists/oss-security/2021/05/13/2 http://www.openwall.com/lists/oss-security/2021/05/14/1 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HD3NJBG25AADVGPRC63RX2JOQBMPSWK4/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX/ http://www.openwall.com/lists/oss-security/2021/05/28/1 https://security.netapp.com/advisory/ntap-20210625-0001/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8