CVE-2016-7908
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU…
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
Description
The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.41% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- qemu/qemu · debian/debian linux
- Source
- secalert@redhat.com
References
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/03/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/03/5Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/93273Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.htmlMailing List, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201611-11Third Party Advisory
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/03/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/03/5Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/93273Third Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlThird Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.htmlMailing List, Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201611-11Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.