https://bugs.freedesktop.org/show_bug.cgi?id=52059
Bug #: 52059
Summary: __indirect_glReadPixels USE_XCB path buffer overflow
Classification: Unclassified
Product: Mesa
Version: 8.0
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: GLX
AssignedTo: mesa-dev@lists.freedesktop.org
ReportedBy: jcris...@debian.org
Hi,
it seems the USE_XCB path in indirect glReadPixels doesn't take the state set
e.g. with glPixelStorei( GL_PACK_ALIGNMENT, 1 ) into account. The non-xcb path
uses __glEmptyImage which does use these values, the xcb path does a plain
memcpy which may overwrite the caller's buffer.
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