kernel: MTU value is not validated in IPv6 stack causing packet loss
Published Nov 16, 2015
5.0
MEDIUMCVSS 2.0
EPSS 3.69%
Description
net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel before 4.0 does not validate attempted changes to the MTU value, which allows context-dependent attackers to cause a denial of service (packet loss) via a value that is (1) smaller than the minimum compliant value or (2) larger than the MTU of an interface, as demonstrated by a Router Advertisement (RA) message that is not validated by a daemon, a different vulnerability than CVE-2015-0272. NOTE: the scope of CVE-2015-0272 is limited to the NetworkManager product.
Affected products
No data.
- ≤ 3.19
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-642.el6
Fixed · RHSA-2016:0855
Red Hat Enterprise Linux 7
kernel-0:3.10.0-327.el7
Fixed · RHSA-2015:2152
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-642.el6 | Fixed | RHSA-2016:0855 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-327.el7 | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux 5 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2 as this flaw was fixed in the recent releases. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6. Future updates for the respective releases may address the issue. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates of Red Hat Enterprise Linux 5. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.69% (0.03693) | 89.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.69% (0.03693) | 88.24th | v5 (v2026.06.15) |
| Mar 30, 2025 | 6.24% (0.06239) | 89.94th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.11% (0.04111) | 80.68th | v4 (v2025.03.14) |
| Mar 19, 2025 | 6.24% (0.06239) | 89.70th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.50% (0.07498) | 91.14th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.94% (0.03936) | 92.34th | v3 (v2023.03.01) |
| Dec 16, 2023 | 4.92% (0.04925) | 91.99th | v3 (v2023.03.01) |
| Apr 28, 2023 | 4.32% (0.04323) | 91.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.10% (0.03097) | 89.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (19)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=77751427a1ff25b27d47a4c36b12c3c8667855ac x_refsource_CONFIRMVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2016-0855.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3364 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/85274 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2015-8215 Vendor Advisory
- https://bugs.launchpad.net/bugs/1500810 x_refsource_CONFIRM
- https://bugzilla.novell.com/show_bug.cgi?id=944296 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1192132 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=1283253 Issue Tracking
- https://github.com/torvalds/linux/commit/77751427a1ff25b27d47a4c36b12c3c8667855ac x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-8215
- https://www.cve.org/CVERecord?id=CVE-2015-8215
Change history (0)
No recorded changes yet.