CVE-2021-29626 Information

Description

In FreeBSD 13.0-STABLE before n245117 12.2-STABLE before r369551 11.4-STABLE before r369559 13.0-RC5 before p1 12.2-RELEASE before p6 and 11.4-RELEASE before p9 copy-on-write logic failed to invalidate shared memory page mappings between multiple processes allowing an unprivileged process to maintain a mapping after it is freed allowing the process to read private data belonging to other processes or the kernel.

CVSS Vector

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

Reference

https://security.FreeBSD.org/advisories/FreeBSD-SA-21:08.vm.asc https://security.netapp.com/advisory/ntap-20210423-0008/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5