In FreeBSD 12.0-STABLE before r349805, 12.0-RELEASE prior to 12.0-RELEASE-p8, 11.3-STABLE before r349806, 11.3-RELEASE prior to 11.3-RELEASE-p1, and 11.2-RELEASE prior to 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
freebsd freebsd 12.0 |
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freebsd freebsd 11.2 |
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freebsd freebsd 11.0 |
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freebsd freebsd 11.3 |
Vulmon