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CVE-2019-5606

Published: Jul 26, 2019

Modified: Aug 4, 2024

PUBLISHED

Description

In FreeBSD 12.0-STABLE before r349805, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r349806, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, code which handles close of a descriptor created by posix_openpt fails to undo a signal configuration. This causes an incorrect signal to be raised leading to a write after free of kernel memory allowing a malicious user to gain root privileges or escape a jail.

Vendor	Product	Versions
FreeBSD	FreeBSD	affected `FreeBSD before 12.0-RELEASE-p8` affected `before 11.3-RELEASE-p1` affected `and before 11.2-RELEASE-p12`

References

FreeBSD-SA-19:13

vendor-advisory

x_refsource_FREEBSD

http://packetstormsecurity.com/files/153748/FreeBSD-Security-Advisory-FreeBSD-SA-19-13.pts.html

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20190814-0003/

x_refsource_CONFIRM

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