CVE-2007-6261

Mac OS X 10.4-10.5.1 - Denial of Service via Mach-O Binary Integer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2007-6261. PoCs published by mu-b.

AI-analyzed exploit summary This exploit modifies a Mach-O binary to trigger an integer overflow in the `load_threadstack` function, causing a local kernel DoS on macOS X xnu <= 1228.0. It patches the `count` field in the `thread_command` structure to induce an infinite loop.

Description

Integer overflow in the load_threadstack function in the Mach-O loader (mach_loader.c) in the xnu kernel in Apple Mac OS X 10.4 through 10.5.1 allows local users to cause a denial of service (infinite loop) via a crafted Mach-O binary.

Exploits (1)

exploitdb WORKING POC VERIFIED
by mu-b · cdososx
https://www.exploit-db.com/exploits/4689

This exploit modifies a Mach-O binary to trigger an integer overflow in the `load_threadstack` function, causing a local kernel DoS on macOS X xnu <= 1228.0. It patches the `count` field in the `thread_command` structure to induce an infinite loop.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Apple macOS X xnu <= 1228.0
No auth needed
Prerequisites: A valid Mach-O binary to modify
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/27884
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/38854
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/26700
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/4095

Scores

EPSS 0.0079
EPSS Percentile 51.4%

Details

CWE
CWE-189
Status published
Products (2)
apple/mac_os_x 10.4
apple/mac_os_x 10.5.1
Published Dec 06, 2007
Tracked Since Feb 18, 2026