CVE-2015-8701
Description
QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 1:2.5+dfsg-3 |
| debian | bullseye | fixed | 1:2.5+dfsg-3 |
| debian | forky | fixed | 1:2.5+dfsg-3 |
| debian | sid | fixed | 1:2.5+dfsg-3 |
| debian | trixie | fixed | 1:2.5+dfsg-3 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| qemu | qemu | {"endIncluding":"2.5.1.1"} | |
References
- http://www.openwall.com/lists/oss-security/2015/12/28/6
- http://www.openwall.com/lists/oss-security/2015/12/29/1
- http://www.securityfocus.com/bid/79706
- https://bugzilla.redhat.com/show_bug.cgi?id=1286971
- https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html
- https://security.gentoo.org/glsa/201602-01
- https://security-tracker.debian.org/tracker/CVE-2015-8701
CWEs
CWE-193
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Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.