CVE-2016-8649: linuxcontainers lxc
Vulnerability summary
CVE-2016-8649 is a critical (CVSS 9.1) vulnerability in linuxcontainers lxc. EPSS estimates a 2.81% chance of exploitation in the next 30 days, higher than 86.5% of scored vulnerabilities.
Severe, CVSS 9.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 01-05-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
lxc-attach in LXC before 1.0.9 and 2.x before 2.0.6 allows an attacker inside of an unprivileged container to use an inherited file descriptor, of the host's /proc, to access the rest of the host's filesystem via the openat() family of syscalls.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.1CriticalCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
2.81%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.81% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- lxc< 1:2.0.6-1
Linuxcontainers1 product
- lxc< 1.0.9 | ≥ 2.0.0, < 2.0.6
Ubuntu1 product
- lxc< 1.0.8-0ubuntu0.4 | < 2.0.5-0ubuntu1~ubuntu16.04.3
3 vendors · 3 products
References
9 links- github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165cX Refsource CONFIRMPatchVendor Advisory
- security-tracker.debian.org/tracker/CVE-2016-8649X Refsource CONFIRMThird Party AdvisoryVDB EntryAdvisory