CVE-2017-8824
Description
The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.
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.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Linux Kernel 4.10.5 / < 4.14.3 (Ubuntu) - DCCP Socket Use-After-Free
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 4.14.11.a-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 4.14.7-1 |
| debian | bullseye | fixed | 4.14.7-1 |
| debian | forky | fixed | 4.14.7-1 |
| debian | sid | fixed | 4.14.7-1 |
| debian | trixie | fixed | 4.14.7-1 |
| linux-kernel | affected | 3.2.97 |
References
- https://security.archlinux.org/ASA-201801-4
- https://security.archlinux.org/ASA-201801-3
- https://security.archlinux.org/ASA-201801-1
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
- http://lists.openwall.net/netdev/2017/12/04/224
- http://www.openwall.com/lists/oss-security/2017/12/05/1
- http://www.securityfocus.com/bid/102056
- https://access.redhat.com/errata/RHSA-2018:0399
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/errata/RHSA-2018:1130
- https://access.redhat.com/errata/RHSA-2018:1170
- https://access.redhat.com/errata/RHSA-2018:1216
- https://access.redhat.com/errata/RHSA-2018:1319
- https://access.redhat.com/errata/RHSA-2018:3822
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
- https://usn.ubuntu.com/3581-1/
- https://usn.ubuntu.com/3581-2/
- https://usn.ubuntu.com/3581-3/
- https://usn.ubuntu.com/3582-1/
- https://usn.ubuntu.com/3582-2/
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- https://www.debian.org/security/2017/dsa-4073
CWEs
CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.