XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls
Published Apr 2, 2009
7.2
HIGHCVSS 2.0
EPSS 0.98%
Description
XNU 1228.9.59 and earlier on Apple Mac OS X 10.5.6 and earlier does not properly restrict interaction between user space and the HFS IOCTL handler, which allows local users to overwrite kernel memory and gain privileges by attaching an HFS+ disk image and performing certain steps involving HFS_GET_BOOT_INFO fcntl calls.
Affected products
No data.
- ≤ 10.5.6
- 10.0
- 10.0.0
- 10.0.1
- 10.0.2
- 10.0.3
- 10.0.4
- 10.1
- 10.1.0
- 10.1.1
- 10.1.2
- 10.1.3
- 10.1.4
- 10.1.5
- 10.2
- 10.2.0
- 10.2.1
- 10.2.2
- 10.2.3
- 10.2.4
- 10.2.5
- 10.2.6
- 10.2.7
- 10.2.8
- 10.3
- 10.3.0
- 10.3.1
- 10.3.2
- 10.3.3
- 10.3.4
- 10.3.5
- 10.3.6
- 10.3.7
- 10.3.8
- 10.3.9
- 10.4
- 10.4.0
- 10.4.1
- 10.4.2
- 10.4.3
- 10.4.4
- 10.4.5
- 10.4.6
- 10.4.7
- 10.4.8
- 10.4.8
- 10.4.8
- 10.4.8
- 10.4.9
- 10.4.10
- 10.4.11
- 10.5
- 10.5.0
- 10.5.1
- 10.5.2
- 10.5.2
- 10.5.3
- 10.5.4
- 10.5.5
- ≤ 10.5.6
- 10.0
- 10.0.0
- 10.0.1
- 10.0.2
- 10.0.3
- 10.0.4
- 10.1
- 10.1.0
- 10.1.1
- 10.1.2
- 10.1.3
- 10.1.4
- 10.1.5
- 10.2
- 10.2.0
- 10.2.1
- 10.2.2
- 10.2.3
- 10.2.4
- 10.2.5
- 10.2.6
- 10.2.7
- 10.2.8
- 10.3
- 10.3.0
- 10.3.1
- 10.3.2
- 10.3.3
- 10.3.4
- 10.3.5
- 10.3.6
- 10.3.7
- 10.3.8
- 10.3.9
- 10.4
- 10.4.0
- 10.4.1
- 10.4.2
- 10.4.3
- 10.4.4
- 10.4.5
- 10.4.6
- 10.4.7
- 10.4.8
- 10.4.9
- 10.4.10
- 10.4.11
- 10.5
- 10.5.0
- 10.5.1
- 10.5.2
- 10.5.3
- 10.5.4
- 10.5.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.98% (0.00979) | 60.88th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.98% (0.00979) | 57.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00204) | 40.53th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 0.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.22% (0.03220) | 84.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.22% (0.03220) | 82.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.22% (0.03220) | 65.30th | v2 (v2022.01.01) |
References (13)
- http://lists.apple.com/archives/security-announce/2009/Aug/msg00001.html vendor-advisoryx_refsource_APPLE
- http://secunia.com/advisories/34424 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/36096 third-party-advisoryx_refsource_SECUNIA
- http://support.apple.com/kb/HT3757 x_refsource_CONFIRM
- http://www.digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.c x_refsource_MISCExploit
- http://www.digit-labs.org/files/exploits/xnu-hfs-fcntl-v2.sh x_refsource_MISCExploit
- http://www.informationweek.com/news/hardware/mac/showArticle.jhtml?articleID=216401181 x_refsource_MISC
- http://www.securityfocus.com/bid/34203 vdb-entryx_refsource_BIDExploit
- http://www.securitytracker.com/id?1022671 vdb-entryx_refsource_SECTRACK
- http://www.us-cert.gov/cas/techalerts/TA09-218A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2009/0822 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2009/2172 vdb-entryx_refsource_VUPEN
- https://www.exploit-db.com/exploits/8266 exploitx_refsource_EXPLOIT-DB
Change history (0)
No recorded changes yet.