CVE-2009-3527

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-10-06 · updated 2026-06-16
Weakness: CWE-362

Description

Race condition in the Pipe (IPC) close function in FreeBSD 6.3 and 6.4 allows local users to cause a denial of service (crash) or gain privileges via vectors related to kqueues, which triggers a use after free, leading to a NULL pointer dereference or memory corruption.

Affected products

FreeBSD: 6.3, 6.4

References

http://osvdb.org/58544
http://security.freebsd.org/advisories/FreeBSD-SA-09:13.pipe.asc
http://www.securityfocus.com/archive/1/506449
http://www.securityfocus.com/bid/36375
http://www.securitytracker.com/id?1022982
http://osvdb.org/58544
http://security.freebsd.org/advisories/FreeBSD-SA-09:13.pipe.asc
http://www.securityfocus.com/archive/1/506449
http://www.securityfocus.com/bid/36375
http://www.securitytracker.com/id?1022982

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