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CVE-2009-1238

HIGH · CVSS 7.2EPSS 0.6%EU EUVD

Race condition in the HFS vfs sysctl interface in XNU 1228.8.20 and earlier on Apple Mac OS X 10.5.6 and earlier allows local users to cause a denial of service (kernel memory corruption) by simultaneously executing the same HFS_SET_PKG_EXTENSIONS code path in multiple threads, which is problematic because of lack of mutex locking for an unspecified global variable.

Key facts

CVSS score
7.2 (v2.0)
Severity
HIGH
CVSS vector
AV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE)
CWE-362
EPSS score
0.6% (50th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-1237)
Published
April 2, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-1237 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • apple / mac os x
  • apple / mac os x
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  • apple / mac os x
  • apple / mac os x

and 64 more…

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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