CVE-2017-11176
A public proof of concept exists; no exploitation attested.
- Published2017-07-11
- Fixed in4.12.2 · 4.11.11 · 4.9.38 · 4.4.77 · 4.1.43 · 3.18.61
- WeaknessCWE-416
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.
Timeline
dates in UTC- 2017-07-1123:29CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-11176?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-11176?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.12 | ≥ 4.12, < 4.12.2 | 4.12.2 | NVD |
| 4.x | ≥ 4.10, < 4.11.11 | 4.11.11 | NVD |
| 4.x | ≥ 4.5, < 4.9.38 | 4.9.38 | NVD |
| 4.x | ≥ 4.2, < 4.4.77 | 4.4.77 | NVD |
| 4.1 | ≥ 3.19, < 4.1.43 | 4.1.43 | NVD |
| 3.x | ≥ 3.17, < 3.18.61 | 3.18.61 | NVD |
| 3.x | ≥ 3.3, < 3.16.47 | 3.16.47 | NVD |
| 3.2 | < 3.2.92 | 3.2.92 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.0 | = 8.0 | no fix published | NVD |
| 9.0 | = 9.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Linux linux kernel to 4.12.2 · 4.11.11 · 4.9.38 · 4.4.77 · 4.1.43 · 3.18.61 · 3.16.47 · 3.2.92
Advisories and patches
- git.kernel.orgPatch
- github.comPatch
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- 6 repositories, unverifiedlexfo/cve-2017-11176DoubleMice/cve-2017-11176leonardo1101/cve-2017-11176c3r34lk1ll3r/CVE-2017-11176Sama-Ayman-Mokhtar/CVE-2017-11176 PoC-in-GitHub
Sources
- NVDCVSS 3.17.8read 2026-10-23
- NVDCVSS 2.07.2read 2026-10-23
- NVDweakness (CWE)CWE-416read 2026-10-23
- FIRST EPSSEPSS score3.8 %2026-10-22
- PoC-in-GitHubproof of concept6read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- 2017-07-11
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2017-11176?
Is CVE-2017-11176 actively exploited?
What is the CVSS score for CVE-2017-11176?
Hear about the next vulnerability in your software
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
No credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.