-------------------------------------------------------------------------- Debian LTS Advisory DLA-2560-1 debian-...@lists.debian.org https://www.debian.org/lts/security/ Sylvain Beucler February 18, 2021 https://wiki.debian.org/LTS --------------------------------------------------------------------------
Package : qemu Version : 1:2.8+dfsg-6+deb9u13 CVE ID : CVE-2020-15469 CVE-2020-15859 CVE-2020-25084 CVE-2020-28916 CVE-2020-29130 CVE-2020-29443 CVE-2021-20181 CVE-2021-20221 Debian Bug : 970253 965978 970539 974687 976388 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. CVE-2020-15469 A MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference. 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. 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. CVE-2020-28916 hw/net/e1000e_core.c has an infinite loop via an RX descriptor with a NULL buffer address. 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. 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. CVE-2021-20181 9pfs: ZDI-CAN-10904: QEMU Plan 9 file system TOCTOU privilege escalation vulnerability. CVE-2021-20221 aarch64: GIC: out-of-bound heap buffer access via an interrupt ID field. For Debian 9 stretch, these problems have been fixed in version 1:2.8+dfsg-6+deb9u13. We recommend that you upgrade your qemu packages. For the detailed security status of qemu please refer to its security tracker page at: https://security-tracker.debian.org/tracker/qemu Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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