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CVE-2021-4145

Low priority
Not affected

A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Not affected Not affected Not affected
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CVE-2021-3947

Medium priority

Some fixes available 1 of 2

A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Not affected Not affected
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CVE-2021-3930

Low priority

Some fixes available 7 of 8

An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Fixed Fixed
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CVE-2021-3929

Low priority

Some fixes available 1 of 2

A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Not affected Not affected
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CVE-2021-3750

Medium priority

Some fixes available 4 of 6

A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Fixed Fixed
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CVE-2021-3748

Medium priority

Some fixes available 5 of 6

A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Fixed Fixed
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CVE-2021-3735

Low priority
Vulnerable

A deadlock issue was found in the AHCI controller device of QEMU. It occurs on a software reset (ahci_reset_port) while handling a host-to-device Register FIS (Frame Information Structure) packet from the guest. A privileged user...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Vulnerable Vulnerable Vulnerable Vulnerable
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CVE-2021-3713

Low priority

Some fixes available 2 of 3

An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Not affected Not affected
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CVE-2021-3682

Medium priority

Some fixes available 7 of 8

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Fixed Fixed Fixed
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CVE-2021-3638

Medium priority

Some fixes available 1 of 5

An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination...

1 affected package

qemu

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
qemu Not affected Not affected Fixed Not affected
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