A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11.
A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.
- Published
- Jan 9, 2018
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 27th percentile
- CWE
- CWE-362
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Report tools
Action score
18
Monitor
Low priority for now.
- CVSS
- 18 / 40 · 4.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
| redhat | enterprise linux compute node eus | cpe:2.3:o:redhat:enterprise_linux_compute_node_eus |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| redhat | enterprise linux for ibm z systems | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems |
| redhat | enterprise linux for ibm z systems eus | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus |
| redhat | enterprise linux for power big endian | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian |
| redhat | enterprise linux for power big endian eus | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus |
| redhat | enterprise linux for power little endian eus | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus |
and 8 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- canonical ubuntu linux17.10
- fedoraproject fedora27
- linux linux kernel4.0 and later · before 4.14.11
- linux linux kernel4.15
- redhat enterprise linux7.0
- redhat enterprise linux compute node eus7.4
- redhat enterprise linux desktop7.0
- redhat enterprise linux eus7.4
- redhat enterprise linux eus7.6
- redhat enterprise linux eus7.7
- redhat enterprise linux for ibm z systems7.0
- redhat enterprise linux for ibm z systems eus7.4
- redhat enterprise linux for power big endian7.0
- redhat enterprise linux for power big endian eus7.4
- redhat enterprise linux for power little endian eus7.4
- redhat enterprise linux for real time7.0
- redhat enterprise linux for real time for nfv7
- redhat enterprise linux for scientific computing7.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
n/a Linux kernel v4.0-rc1 through v4.15-rc5
- Linux kernel v4.0-rc1 through v4.15-rc5affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 4.14.12-1 | 4.14.12-1 |
| openSUSE:Tumbleweed | kernel-source | before 5.14.6-1.4 | 5.14.6-1.4 |
| openSUSE:Tumbleweed | kernel-source | before 6.6.17-1.1 | 6.6.17-1.1 |
| Red Hat:enterprise_linux:7::client | kernel | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-abi-whitelists | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debug | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debug-debuginfo | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debug-devel | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debuginfo | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debuginfo-common-x86_64 | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-devel | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-doc | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-headers | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools-debuginfo | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools-libs | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools-libs-devel | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | perf | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | perf-debuginfo | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | python-perf | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::client | python-perf-debuginfo | before 0:3.10.0-862.el7 | 0:3.10.0-862.el7 |
| Red Hat:enterprise_linux:7::server | kernel | before 0:4.14.0-49.el7a | 0:4.14.0-49.el7a |
| Red Hat:enterprise_linux:7::server | kernel-abi-whitelists | before 0:4.14.0-49.el7a | 0:4.14.0-49.el7a |
| Red Hat:enterprise_linux:7::server | kernel-alt | before 0:4.14.0-49.el7a | 0:4.14.0-49.el7a |
+91
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Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:linux | 4.14.12-1 · Debian:12 | Package registry (OSV) |
| opensuse:kernel-source | 5.14.6-1.4 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:kernel | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-alt | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-bootwrapper | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo-common-aarch64 | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo-common-ppc64le | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-debuginfo-common-s390x | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:kernel-devel | 0:4.14.0-49.el7a · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| suse:kernel-default | 4.4.114-94.11.3 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
| suse:kernel-docs | 4.4.114-94.11.4 · SUSE:Linux Enterprise Software Development Kit 12 SP3 | Package registry (OSV) |
| suse:kernel-obs-build | 4.4.114-94.11.3 · SUSE:Linux Enterprise Software Development Kit 12 SP3 | Package registry (OSV) |
| suse:kernel-rt | 4.4.114-27.1 · SUSE:Linux Enterprise Real Time 12 SP2 | Package registry (OSV) |
| suse:kernel-rt_debug | 4.4.114-27.1 · SUSE:Linux Enterprise Real Time 12 SP2 | Package registry (OSV) |
| suse:kernel-source | 4.4.114-94.11.2 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
| suse:kernel-source-rt | 4.4.114-27.1 · SUSE:Linux Enterprise Real Time 12 SP2 | Package registry (OSV) |
| suse:kernel-syms | 4.4.114-94.11.2 · SUSE:Linux Enterprise Desktop 12 SP3 | Package registry (OSV) |
| suse:kernel-syms-rt | 4.4.114-27.1 · SUSE:Linux Enterprise Real Time 12 SP2 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP2_Update_18 | 1-3.3.2 · SUSE:Linux Enterprise Live Patching 12 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP3_Update_8 | 1-4.3.5 · SUSE:Linux Enterprise Live Patching 12 SP3 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- usn.ubuntu.com/3617-3/
- usn.ubuntu.com/3619-1/
- usn.ubuntu.com/3619-2/
- usn.ubuntu.com/3632-1/
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0
- seclists.org/oss-sec/2018/q1/7
- www.securityfocus.com/bid/102485
- access.redhat.com/errata/RHSA-2018:0654
- access.redhat.com/errata/RHSA-2018:0676
- access.redhat.com/errata/RHSA-2018:1062
- access.redhat.com/errata/RHSA-2019:1946
- access.redhat.com/security/cve/CVE-2017-15129
- bugzilla.redhat.com/show_bug.cgi?id=1531174
- github.com/torvalds/linux/commit/21b5944350052d2583e82dd59b19a9ba94a007f0
- marc.info/?l=linux-netdev&m=151370451121029&w=2
- marc.info/?t=151370468900001&r=1&w=2
- usn.ubuntu.com/3617-1/
- usn.ubuntu.com/3617-2/
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11
Vendor advisories and official records. Exploit/PoC links are deliberately left out.