| Package | qemu |
|---|---|
| Version | 1:2.1+dfsg-12+deb8u19 |
| Related CVEs | CVE-2020-11947 CVE-2020-15469 CVE-2020-15859 CVE-2020-25084 CVE-2020-29130 CVE-2020-29443 CVE-2021-20181 CVE-2021-20221 |
Several vulnerabilities were discovered in QEMU, a fast processor emulator (notably used in KVM and Xen HVM virtualization). An attacker could trigger a denial-of-service (DoS), information leak, and possibly execute arbitrary code with the privileges of the QEMU process on the host.
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CVE-2020-15469
A MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
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CVE-2020-15859
QEMU has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data’s address set to the e1000e’s MMIO address.
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CVE-2020-25084
QEMU has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.
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CVE-2020-28916
hw/net/e1000e_core.c has an infinite loop via an RX descriptor with a NULL buffer address.
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CVE-2020-29130
slirp.c has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the total packet length.
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CVE-2020-29443
ide_atapi_cmd_reply_end in hw/ide/atapi.c allows out-of-bounds read access because a buffer index is not validated.
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CVE-2021-20181
9pfs: ZDI-CAN-10904: QEMU Plan 9 file system TOCTOU privilege escalation vulnerability.
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CVE-2021-20221
aarch64: GIC: out-of-bound heap buffer access via an interrupt ID field.
For Debian 8 jessie, these problems have been fixed in version 1:2.1+dfsg-12+deb8u19.
We recommend that you upgrade your qemu packages.
Further information about Extended LTS security advisories can be found in the dedicated section of our website.