A vulnerability has been reported in FreeBSD, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or potentially gain escalated privileges.
The vulnerability is caused due to a mutex unlock error in the "pfs_getextattr()" function within the "pseudofs" module when handling extended attributes. This can be exploited to cause a kernel panic and crash the system.
Successful exploitation may allow execution of arbitrary code in the kernel, but requires the system to allow NULL page mapping.
The vulnerability is reported in version 7.x prior to 7.3-RELEASE and version 8.x prior to 8.0-RC1.
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