CVE-2017-6074

high

Published 2017-02-18 · Modified 2026-05-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

7.8

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.8

Description

The dccp_rcv_state_process function in net/dccp/input.c in the Linux kernel through 4.9.11 mishandles DCCP_PKT_REQUEST packet data structures in the LISTEN state, which allows local users to obtain root privileges or cause a denial of service (double free) via an application that makes an IPV6_RECVPKTINFO setsockopt system call.

Predictions

Exploit likelihood

75%

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.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-41457 dos linux

Andrey Konovalov · 2017-02-26

Linux Kernel 4.4.0 (Ubuntu) - DCCP Double-Free (PoC)

Source code queued for fetch — refresh in a moment.

EDB-41458 local linux

Andrey Konovalov · 2017-02-26

Linux Kernel 4.4.0 (Ubuntu) - DCCP Double-Free Privilege Escalation

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
arch		fixed	`4.9.13-1`
sles		affected
debian	bookworm	fixed	`4.9.13-1`
debian	bullseye	fixed	`4.9.13-1`
debian	forky	fixed	`4.9.13-1`
debian	sid	fixed	`4.9.13-1`
debian	trixie	fixed	`4.9.13-1`
linux-kernel		affected	`3.2.86`
debian	8.0	affected

References

CWEs

CWE-415

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

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