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CVE-2021-29627

High

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.

SeverityHigh
CVSS7.8
Exploit probability—
ProductFreebsd
PublishedApr 7, 2021
First seenApr 7, 2021

How to fix

Update
  • freebsd freebsd12.2 or later

Affected products

ProductAffected versionsFixed in
freebsd freebsd12.0 ≤ v < 12.2, 12.2, 13.012.2

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