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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 earlier allows local users to…
High7.2EPSS 0.62%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Weakness
Affected products
n/a
- affected n/a
References (5)
- 8265 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 34202 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 34424 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.digit-labs.org/files/exploits/xnu-vfssysctl-dos.c (opens in a new tab)x_refsource_MISCx_transferred
- http://www.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2009-1238)Record last updated .