kernel: dccp: crash while sending ipv6 reset packet
Published Jul 27, 2018
7.5
HIGHCVSS 3.0
EPSS 5.22%
Description
It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation before 2.6.22.17 used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.
Affected products
-
- Version 2.6.22.17StatusaffectedConstraints-
- Version
Configuration 1
- < 2.6.22.17
Configuration 2
- 5.0
- 5.0
- 5.6
- 5.9
- 5.0
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-419.el5
Fixed · RHSA-2017:0323
Red Hat Enterprise Linux 5.6 Long Life
kernel-0:2.6.18-238.58.1.el5
Fixed · RHSA-2017:0347
Red Hat Enterprise Linux 5.9 Long Life
kernel-0:2.6.18-348.33.1.el5
Fixed · RHSA-2017:0346
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-419.el5 | Fixed | RHSA-2017:0323 |
| Red Hat Enterprise Linux 5.6 Long Life | kernel-0:2.6.18-238.58.1.el5 | Fixed | RHSA-2017:0347 |
| Red Hat Enterprise Linux 5.9 Long Life | kernel-0:2.6.18-348.33.1.el5 | Fixed | RHSA-2017:0346 |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects Red Hat Enterprise Linux 5 kernel. This issue was fixed in a versions 6 and 7 prior to this issue being raised. Future Linux kernel updates for Red Hat Enterprise Linux 5 may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:C
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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.22% (0.05220) | 92.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.18% (0.05176) | 91.35th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.87% (0.03871) | 87.16th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.16% (0.09161) | 87.68th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.87% (0.03871) | 87.46th | v4 (v2025.03.14) |
| Jul 20, 2024 | 2.53% (0.02528) | 90.31th | v3 (v2023.03.01) |
| Dec 18, 2023 | 2.53% (0.02528) | 89.03th | v3 (v2023.03.01) |
| Jul 21, 2023 | 3.54% (0.03541) | 90.33th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.88% (0.02884) | 89.18th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.32% (0.01319) | 70.74th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.17% (0.02172) | 80.18th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.70% (0.01703) | 34.67th | v1 |
| Jan 6, 2022 | 1.70% (0.01703) | 33.97th | v1 |
| Sep 1, 2021 | 1.70% (0.01703) | 74.02th | v1 |
| Apr 14, 2021 | 1.70% (0.01703) | 0.00th | v1 |
References (11)
- http://rhn.redhat.com/errata/RHSA-2017-0323.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0346.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0347.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.securityfocus.com/bid/96529 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037909 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-2634 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1424751 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-2634
- https://www.cve.org/CVERecord?id=CVE-2017-2634
Change history (0)
No recorded changes yet.