A double-free vulnerability in vrendrenderer.c in virglrenderer through 0.8.1 allows attackers to cause a denial of service by triggering texture allocation failure, because vrendrendererresourceallocatedtexture is not an appropriate place for a free.

A NULL pointer dereference in vrendrenderer.c in virglrenderer through 0.8.1 allows attackers to cause a denial of service via commands that attempt to launch a grid without previously providing a Compute Shader (CS).

Memory leak in the vrendcreatevertexelementsstate function in vrendrenderer.c in virglrenderer allows local guest OS users to cause a denial of service (host memory consumption) via a large number of VIRGLOBJECTVERTEXELEMENTS commands.

Memory leak in the addshaderprogram function in vrendrenderer.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (host memory consumption) via vectors involving the sprog variable.

Stack-based buffer overflow in the parseidentifier function in tgsitext.c in the TGSI auxiliary module in the Gallium driver in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to parsing properties.

The vrenddecodereset function in vrenddecode.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (NULL pointer dereference and QEMU process crash) by destroying context 0 (zero).

Heap-based buffer overflow in the vrendcreatevertexelementsstate function in vrendrenderer.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (out-of-bounds array access and crash) via the numelements parameter.

Memory leak in the vrendrendererinitblitctx function in vrendblitter.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (host memory consumption) via a large number of VIRGLCCMDBLIT commands.

Stack-based buffer overflow in the vrenddecodesetframebufferstate function in vrenddecode.c in virglrenderer before 926b9b3460a48f6454d8bbe9e44313d86a65447f, as used in Quick Emulator (QEMU), allows a local guest users to cause a denial of service (application crash) via the "nrcbufs" argument.

The vrenddrawvbo function in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors involving vertextbufferindex.

The utilformatispureuint function in vrendrenderer.c in Virgil 3d project (aka virglrenderer) 0.6.0 and earlier allows local guest OS users to cause a denial of service (NULL pointer dereference) via a crafted VIRGLCCMDCLEAR command.

The parseinstruction function in gallium/auxiliary/tgsi/tgsitext.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (out-of-bounds array access and process crash) via a crafted texture instruction.

Memory leak in the virglresourceattachbacking function in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (memory consumption) via a large number of VIRTIOGPUCMDRESOURCEATTACHBACKING commands.

Memory leak in the vrendrenderercontextcreateinternal function in vrenddecode.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (host memory consumption) by repeatedly creating a decode context.

An out-of-bounds read in the vrendblitneedswizzle function in vrendrenderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service via VIRGLCCMDBLIT commands.

A heap-based buffer overflow in the vrendrenderertransferwriteiov function in vrendrenderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service, or QEMU guest-to-host escape and code execution, via VIRGLCCMDRESOURCEINLINEWRITE commands.

A heap-based buffer overflow in the vrendrenderertransferwriteiov function in vrendrenderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service via VIRGLCCMDRESOURCEINLINEWRITE commands.

A NULL pointer dereference in vrendrenderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service via malformed commands.

A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer). The virgl did not properly initialize memory when allocating a host-backed memory resource. A malicious guest could use this flaw to mmap from the guest kernel and read this uninitialized memory from the host, possibly leading to information disclosure.

An out-of-bound write was found in virglrenderer in src/vrendrenderer.c:readtransferdata().