CVE-2014-3640

low

Published 2014-11-07 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.1

Description

The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.

Predictions

Exploit likelihood

20%

Patch ETA

—

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 with source_tier=community-verified.

OS impact

Red Hat Affected 1 release

Version	Status	Fixed in
7.0	Affected	—

Ubuntu Affected 4 releases

Version	Status	Fixed in
14.10	Affected	—
14.04	Affected	—
12.04	Affected	—
10.04	Affected	—

Debian Mixed 6 releases

Version	Status	Fixed in
trixie	Fixed	`2.1+dfsg-5`
sid	Fixed	`2.1+dfsg-5`
forky	Fixed	`2.1+dfsg-5`
bullseye	Fixed	`2.1+dfsg-5`
bookworm	Fixed	`2.1+dfsg-5`
7.0	Affected	—

Application impact

Vendor	Product	Versions
qemu	qemu	`2.0.0`
qemu	qemu	`2.0.2`
qemu	qemu	`2.1.0`
qemu	qemu	`2.1.1`

References

CWEs

CWE-476

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.