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FreeBSD: VID-C11EE146-C266-11EA-8659-901B0EF719AB (CVE-2020-7457): FreeBSD -- IPv6 socket option race condition and use after free

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FreeBSD: VID-C11EE146-C266-11EA-8659-901B0EF719AB (CVE-2020-7457): FreeBSD -- IPv6 socket option race condition and use after free

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
07/09/2020
Created
07/14/2020
Added
07/11/2020
Modified
10/20/2020

Description

In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.

Solution(s)

  • freebsd-upgrade-base-11_3-release-p11
  • freebsd-upgrade-base-11_4-release-p1
  • freebsd-upgrade-base-12_1-release-p7

References

  • CVE-2020-7457

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