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 mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1:2.5+dfsg-3 |
| sid | Fixed | 1:2.5+dfsg-3 |
| forky | Fixed | 1:2.5+dfsg-3 |
| bullseye | Fixed | 1:2.5+dfsg-3 |
| bookworm | 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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.