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CVE-2016-7907

Date: October 5, 2016

The imx_fec_do_tx function in hw/net/imx_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.

Severity Score

Related Resources (11)

https://people.canonical.com/~ubuntu-security/cve/CVE-2016-7907
http://www.openwall.com/lists/oss-security/2016/10/03/4
https://access.redhat.com/security/cve/CVE-2016-7907
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html
https://security-tracker.debian.org/tracker/CVE-2016-7907
http://www.openwall.com/lists/oss-security/2016/10/03/1
https://nvd.nist.gov/vuln/detail/CVE-2016-7907
https://security.gentoo.org/glsa/201611-11
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
http://www.securityfocus.com/bid/93274
https://www.mend.io/vulnerability-database/CVE-2016-7907

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Resource Management Errors

CWE-399

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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