[ubuntu/focal-security] qemu 1:4.2-3ubuntu6.21 (Accepted)

[Marc Deslauriers]

qemu (1:4.2-3ubuntu6.21) focal-security; urgency=medium

  * SECURITY UPDATE: crash or code exec in USB redirector device emulation
    - debian/patches/CVE-2021-3682.patch: fix free call in
      hw/usb/redirect.c.
    - CVE-2021-3682
  * SECURITY UPDATE: heap use-after-free in virtio_net_receive_rcu
    - debian/patches/CVE-2021-3748.patch: fix use after unmap/free for sg
      in hw/net/virtio-net.c.
    - CVE-2021-3748
  * SECURITY UPDATE: off-by-one error in mode_sense_page()
    - debian/patches/CVE-2021-3930.patch: MODE_PAGE_ALLS not allowed in
      MODE SELECT commands in hw/scsi/scsi-disk.c.
    - CVE-2021-3930
  * SECURITY UPDATE: NULL dereference in floppy disk emulator
    - debian/patches/CVE-2021-20196-1.patch: Extract
      blk_create_empty_drive() in hw/block/fdc.c.
    - debian/patches/CVE-2021-20196-2.patch: kludge missing floppy drive in
      hw/block/fdc.c.
    - CVE-2021-20196
  * SECURITY UPDATE: integer overflow in vmxnet3 NIC emulator
    - debian/patches/CVE-2021-20203.patch: validate configuration values
      during activate in hw/net/vmxnet3.c.
    - CVE-2021-20203

qemu (1:4.2-3ubuntu6.20) focal; urgency=medium

  * d/p/u/lp1953338-*: KVM hardware diagnose 318 data improvements
    (LP: #1953338)

qemu (1:4.2-3ubuntu6.19) focal; urgency=medium

  * d/p/u/lp-1749393-linux-user-Reserve-space-for-brk.patch: fix static
    use cases needing a lot of brk space (LP: #1749393)
  * d/p/u/lp-1929926-target-s390x-Fix-translation-exception-on-illegal-in.patch:
    fix uretprobe in s390x TCG (LP: #1929926)

qemu (1:4.2-3ubuntu6.18) focal; urgency=medium

  * enhance loading of old modules post upgrade (LP: #1913421)
    - d/rules: d/qemu-system-gui.{prerm,postrm}.in: do not save gui modules
      (can't be loaded late)
    - d/qemu-block-extra.postrm.in: clear all (current and former) modules
      on purge
    - d/qemu-block-extra.prerm.in: test for exec and prepare /var/run/qemu
      if needed

Date: 2022-02-23 00:20:09.498586+00:00
Changed-By: Marc Deslauriers <marc.deslauriers at canonical.com>
https://launchpad.net/ubuntu/+source/qemu/1:4.2-3ubuntu6.21
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