CVE-2009-1238: n/a vulnerability

CVE-2009-1238: Race condition in the HFS vfs sysctl interface in XNU 1228.8.20 and earlier on Apple Mac OS X 10.5.6 and ea...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 05:04 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2009-1238 is a local denial-of-service flaw in Apple Mac OS X 10.5.6 and earlier. A user already able to run code on the Mac could trigger kernel memory corruption and crash the system. This is mainly a legacy-system availability risk, not a remotely exploitable takeover based on the provided evidence. Exposure is likely limited to legacy Apple Mac OS X 10.5.6 or earlier systems where local users can execute code. Modern supported macOS versions are not identified as affected in the provided source bundle. Treat this as a targeted legacy availability issue. It deserves attention if old Mac systems still support operations, shared labs, kiosks, or build environments. It is not supported as an internet-scale emergency by the provided evidence. Mitigation focus: Inventory any Mac OS X 10.5.6 or earlier systems.; Check Apple or vendor guidance for fixed versions or replacement guidance.; Retire or isolate unsupported legacy Mac systems where practical..

Prepared: Jun 28, 2026, 11:04 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 2, 2009, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
8265CVE reference · exploit, x_refsource_EXPLOIT-DB

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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