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FreeBSD: VID-02FB9764-1893-11ED-9B22-002590C1F29C (CVE-2022-23091): FreeBSD -- Memory disclosure by stale virtual memory mapping

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FreeBSD: VID-02FB9764-1893-11ED-9B22-002590C1F29C (CVE-2022-23091): FreeBSD -- Memory disclosure by stale virtual memory mapping

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
08/09/2022
Created
11/08/2022
Added
11/04/2022
Modified
11/04/2022

Description

Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.

From VID-02FB9764-1893-11ED-9B22-002590C1F29C:

Problem Description:

A particular case of memory sharing is mishandled in the virtual

memory system. This is very similar to SA-21:08.vm, but with a

different root cause.

Impact:

An unprivileged local user process can maintain a mapping of a page

after it is freed, allowing that process to read private data

belonging to other processes or the kernel.

Solution(s)

  • freebsd-upgrade-base-12_3-release-p6
  • freebsd-upgrade-base-13_0-release-p12
  • freebsd-upgrade-base-13_1-release-p1

References

  • CVE-2022-23091

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