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FreeBSD: VID-F8E1E2A6-9791-11EB-B87A-901B0EF719AB (CVE-2021-29627): FreeBSD -- double free in accept_filter(9) socket configuration interface

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FreeBSD: VID-F8E1E2A6-9791-11EB-B87A-901B0EF719AB (CVE-2021-29627): FreeBSD -- double free in accept_filter(9) socket configuration interface

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
04/06/2021
Created
11/08/2022
Added
11/04/2022
Modified
11/04/2022

Description

In FreeBSD 13.0-STABLE before n245050, 12.2-STABLE before r369525, 13.0-RC4 before p0, and 12.2-RELEASE before p6, listening socket accept filters implementing the accf_create callback incorrectly freed a process supplied argument string. Additional operations on the socket can lead to a double free or use after free.

Solution(s)

  • freebsd-upgrade-base-12_2-release-p6

References

  • CVE-2021-29627

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