CVE-2005-3807

Linux Kernel 2.6.10-2.6.15 - Denial of Service via VFS File Lease Handling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2005-3807. PoCs published by J. Bruce Fields.

AI-analyzed exploit summary This exploit demonstrates a local denial-of-service vulnerability in the Linux kernel by repeatedly setting and releasing file-lock leases, causing excessive kernel memory consumption. The issue stems from a memory leak in the kernel's file-lock lease code.

Description

Memory leak in the VFS file lease handling in locks.c in Linux kernels 2.6.10 to 2.6.15 allows local users to cause a denial of service (memory exhaustion) via certain Samba activities that cause an fasync entry to be re-allocated by the fcntl_setlease function after the fasync queue has already been cleaned by the locks_delete_lock function.

Exploits (1)

exploitdb WORKING POC VERIFIED
by J. Bruce Fields · cdoslinux
https://www.exploit-db.com/exploits/26749

This exploit demonstrates a local denial-of-service vulnerability in the Linux kernel by repeatedly setting and releasing file-lock leases, causing excessive kernel memory consumption. The issue stems from a memory leak in the kernel's file-lock lease code.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Linux kernel versions 2.6.10 through 2.6.14.2
No auth needed
Prerequisites: Local access to the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (11)

Core 11
Core References
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/17917
Third Party Advisory, VDB Entry vendor-advisory x_refsource_suse
http://www.securityfocus.com/advisories/9806
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/18203
Various Sources vendor-advisory x_refsource_ubuntu
http://www.ubuntulinux.org/usn/usn-231-1
Third Party Advisory, VDB Entry vendor-advisory x_refsource_suse
http://www.securityfocus.com/archive/1/419522/100/0/threaded
Mailing List mailing-list x_refsource_mlist
http://marc.info/?l=linux-kernel&m=113190437101622&w=2
Third Party Advisory, VDB Entry vendor-advisory x_refsource_fedora
http://www.securityfocus.com/archive/1/427981/100/0/threaded
Vendor Advisory vendor-advisory x_refsource_trustix
http://www.trustix.org/errata/2005/0070
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/17918
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/15745

Scores

EPSS 0.0075
EPSS Percentile 49.9%

Details

Status published
Products (42)
linux/linux_kernel 2.6.0
linux/linux_kernel 2.6.1
linux/linux_kernel 2.6.2
linux/linux_kernel 2.6.3
linux/linux_kernel 2.6.4
linux/linux_kernel 2.6.5
linux/linux_kernel 2.6.6
linux/linux_kernel 2.6.7
linux/linux_kernel 2.6.8
linux/linux_kernel 2.6.8.1
... and 32 more
Published Nov 25, 2005
Tracked Since Feb 18, 2026