# qemu-user-static 1:4.2-3ubuntu6.17: qemu-user-static 1:4.2-3ubuntu6.17 for Ubuntu 20.04 LTS (focal)

qemu-user-static 1:4.2-3ubuntu6.17, released June 17, 2021, fixes 15 CVEs in qemu-user-static. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-focal-qemu-user-static-1-4.2-3ubuntu6.17
- Platform: Linux
- Released: Jun 17, 2021
- Priority: High (Closes CVE-2021-3546, high severity)
- CVEs: 15, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [qemu-user-static](https://patchblox.com/security/data/product/linux/qemu-user-static.md) | Ubuntu 20.04 LTS (focal) | 1:4.2-3ubuntu6.17 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-3546](https://patchblox.com/security/data/cve/CVE-2021-3546.md) | High | hivex: vhost-user-gpu: abstract vg_cleanup_mapping_iov (Li Qiang) [Orabug: 32950716] | 8.2 | 0.0046 |  |
| [CVE-2021-3409](https://patchblox.com/security/data/cve/CVE-2021-3409.md) | Routine | qemu-block-extra: The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective,thus making QEMU vulnerable to the out-of-bou... | 5.7 | 0.0049 |  |
| [CVE-2021-3416](https://patchblox.com/security/data/cve/CVE-2021-3416.md) | Routine | libguestfs-gfs2: QEMU: net: infinite loop in loopback mode may lead to stack overflow | 6.0 | 0.0046 |  |
| [CVE-2021-3392](https://patchblox.com/security/data/cve/CVE-2021-3392.md) | Routine | qemu-block-extra: A use-after-free flaw was found in the MegaRAID emulator of QEMU | 3.2 | 0.0045 |  |
| [CVE-2021-3544](https://patchblox.com/security/data/cve/CVE-2021-3544.md) | Routine | hivex: vhost-user-gpu: reorder free calls (Gerd Hoffmann) [Orabug: 32950701] | 6.5 | 0.0044 |  |
| [CVE-2020-15469](https://patchblox.com/security/data/cve/CVE-2020-15469.md) | Routine | qemu-block-extra: In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference. | 2.3 | 0.0043 |  |
| [CVE-2021-3545](https://patchblox.com/security/data/cve/CVE-2021-3545.md) | Routine | hivex: vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info (Li Qiang) [Orabug: 32950708] | 6.5 | 0.0042 |  |
| [CVE-2021-3582](https://patchblox.com/security/data/cve/CVE-2021-3582.md) | Routine | hivex: hw/rdma: Fix possible mremap overflow in the pvrdma device (Marcel Apfelbaum) [Orabug: 33120084] | 6.5 | 0.0039 |  |
| [CVE-2021-3527](https://patchblox.com/security/data/cve/CVE-2021-3527.md) | Routine | qemu-block-extra: A flaw was found in the USB redirector device (usb-redir) of QEMU | 5.5 | 0.0037 |  |
| [CVE-2021-20257](https://patchblox.com/security/data/cve/CVE-2021-20257.md) | Routine | hivex: e1000: fail early for evil descriptor (Jason Wang) [Orabug: 32560552] | 6.5 | 0.0037 |  |
| [CVE-2021-3608](https://patchblox.com/security/data/cve/CVE-2021-3608.md) | Routine | hivex: pvrdma: Fix the ring init error flow (Marcel Apfelbaum) [Orabug: 33120142] | 6.0 | 0.0036 |  |
| [CVE-2020-35504](https://patchblox.com/security/data/cve/CVE-2020-35504.md) | Routine | qemu-block-extra: A NULL pointer dereference flaw was found in the SCSI emulation support ofQEMU in versions before 6.0.0 | n/a | 0.0034 |  |
| [CVE-2021-20221](https://patchblox.com/security/data/cve/CVE-2021-20221.md) | Routine | qemu-block-extra: An out-of-bounds heap buffer access issue was found in the ARM GenericInterrupt Controller emulator of QEMU up to and... | 6.0 | 0.0033 |  |
| [CVE-2020-35505](https://patchblox.com/security/data/cve/CVE-2020-35505.md) | Routine | qemu-block-extra: A NULL pointer dereference flaw was found in the am53c974 SCSI host busadapter emulation of QEMU in versions before 6... | n/a | 0.0032 |  |
| [CVE-2021-3607](https://patchblox.com/security/data/cve/CVE-2021-3607.md) | Routine | hivex: pvrdma: Ensure correct input on ring init (Marcel Apfelbaum) [Orabug: 33120146] | 6.0 | 0.0030 |  |

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Data as of 2026-11-13T14:02:24Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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