The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linu
The ndisc_router_discovery function in net/ipv6/ndisc.c in the Neighbor Discovery (ND) protocol implementation in the IPv6 stack in the Linux kernel before 3.19.6 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.
- Published
- May 27, 2015
- Updated
- Jun 16, 2026
- EPSS
- 3.0% · 87th percentile
- CWE
- CWE-17
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Report tools
Action score
14
Monitor
Low priority for now.
- CVSS
- 13 / 40 · 3.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| oracle | linux | cpe:2.3:o:oracle:linux |
| oracle | solaris | cpe:2.3:o:oracle:solaris |
| redhat | enterprise mrg | cpe:2.3:o:redhat:enterprise_mrg |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux7.0
- debian debian linux8.0
- fedoraproject fedora20
- fedoraproject fedora21
- fedoraproject fedora22
- linux linux kernelup to 3.19.5 inclusive
- oracle linux5.0
- oracle solaris11.3
- redhat enterprise mrg2.5
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 3.16.7-ckt9-1 | 3.16.7-ckt9-1 |
| Debian:6.0 | linux-2.6 | before 2.6.32-48squeeze12 | 2.6.32-48squeeze12 |
| Debian:7 | linux | before 3.2.68-1+deb7u1 | 3.2.68-1+deb7u1 |
| Debian:8 | linux | before 3.16.7-ckt9-3~deb8u1 | 3.16.7-ckt9-3~deb8u1 |
| Red Hat:enterprise_linux:6::client | kernel | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-abi-whitelists | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-debuginfo | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-devel | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-i686 | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-x86_64 | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-devel | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-doc | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-firmware | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | kernel-headers | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | perf | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | perf-debuginfo | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | python-perf | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::client | python-perf-debuginfo | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::server | kernel-bootwrapper | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::server | kernel-debuginfo-common-ppc64 | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::server | kernel-debuginfo-common-s390x | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
| Red Hat:enterprise_linux:6::server | kernel-kdump | before 0:2.6.32-504.30.3.el6 | 0:2.6.32-504.30.3.el6 |
+90
Same product
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
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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 | 3.16.7-ckt9-1 · Debian:12 | Package registry (OSV) |
| debian:linux-2.6 | 2.6.32-48squeeze12 · Debian:6.0 | Package registry (OSV) |
| red hat:kernel | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debug | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-i686 | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-x86_64 | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-devel | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-doc | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-firmware | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-headers | 0:2.6.32-504.30.3.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| suse:kernel-default | 3.12.43-52.6.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kernel-docs | 3.12.43-52.6.2 · SUSE:Linux Enterprise Software Development Kit 12 | Package registry (OSV) |
| suse:kernel-ec2 | 3.12.43-52.6.1 · SUSE:Linux Enterprise Module for Public Cloud 12 | Package registry (OSV) |
| suse:kernel-obs-build | 3.12.43-52.6.2 · SUSE:Linux Enterprise Software Development Kit 12 | Package registry (OSV) |
| suse:kernel-pae | 3.0.101-0.7.37.1 · SUSE:Linux Enterprise Server 11 SP2-LTSS | Package registry (OSV) |
| suse:kernel-source | 3.12.43-52.6.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kernel-syms | 3.12.43-52.6.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kernel-trace | 3.0.101-0.63.TDC.1 · SUSE:Linux Enterprise Server 11 SP3-TERADATA | Package registry (OSV) |
| suse:kernel-xen | 3.12.43-52.6.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kgraft-patch-SLE12_Update_5 | 1-2.3 · SUSE:Linux Enterprise Live Patching 12 | 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
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-17 · DEPRECATED: CodeCVSS vector
AV:A/AC:L/Au:N/C:N/I:N/A:P
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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
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
- git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6fd99094de2b83d1d4c8457f2c83483b2828e75a
- lists.fedoraproject.org/pipermail/package-announce/2015-April/155804.html
- lists.fedoraproject.org/pipermail/package-announce/2015-April/155854.html
- lists.fedoraproject.org/pipermail/package-announce/2015-April/155908.html
- lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
- rhn.redhat.com/errata/RHSA-2015-1221.html
- rhn.redhat.com/errata/RHSA-2015-1534.html
- rhn.redhat.com/errata/RHSA-2015-1564.html
- www.debian.org/security/2015/dsa-3237
- www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- www.securityfocus.com/bid/74315
- www.securitytracker.com/id/1032417
- bugzilla.redhat.com/show_bug.cgi?id=1203712
- github.com/torvalds/linux/commit/6fd99094de2b83d1d4c8457f2c83483b2828e75a
Vendor advisories and official records. Exploit/PoC links are deliberately left out.