Title: X.Org 'libxext' '_XAllocID' Function Denial of Service Vulnerability
Severity: MODERATE
Description:
The 'libxext' library is an X Window System client interface to several extensions of the X protocol.
The library is prone to a remote denial-of-service vulnerability. Specifically, this issue arises in the '_XAllocID' function due to a race-condition error and affects applications that use the X shared memory extensions.
Successful exploits will allow an attacker to crash an application and deny service to legitimate users.
'libxext' 6 versions 1.0.3, 1.0.4, and 1.0.5 are affected; other versions may be vulnerable as well.
Affected Products:
- Mandriva Linux Mandrake 2008.0
- Mandriva Linux Mandrake 2008.0 x86_64
- Mandriva Linux Mandrake 2009.0
- Mandriva Linux Mandrake 2009.0 x86_64
- Mandriva Linux Mandrake 2009.1
- Mandriva Linux Mandrake 2009.1 x86_64
- Mandriva Linux Mandrake 2010.0
- Mandriva Linux Mandrake 2010.0 x86_64
- X.org libxext6 1.0.3
- X.org libxext6 1.0.4
- X.org libxext6 1.0.5
References:
- Jamey Sharp: XAllocID must only be called with the Display lock held.
- fdsteve: [Xcb] xcb_io.c:378: _XAllocID: Assertion `ret != inval_id' failed
- thestig@chromium.org: Issue 25324: Crash in canvas_paint_linux due to Xlib bug
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