kernel: Reachable BUG_ON from userspace in sctp_wait_for_sndbuf
Published Feb 18, 2017
5.5
MEDIUMCVSS 3.0
EPSS 1.16%
Description
Race condition in the sctp_wait_for_sndbuf function in net/sctp/socket.c in the Linux kernel before 4.9.11 allows local users to cause a denial of service (assertion failure and panic) via a multithreaded application that peels off an association in a certain buffer-full state.
Affected products
No data.
- ≤ 4.9.11
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-514.21.1.el7
Fixed · RHSA-2017:1308
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-rt
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-514.21.1.el7 | Fixed | RHSA-2017:1308 |
| Red Hat Enterprise Linux 5 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6 and MRG-2. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7. This flaw may affect multiple containers running on this system. Future Linux kernel updates for the respective releases might address this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:M/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 v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.16% (0.01162) | 66.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.16% (0.01162) | 62.97th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.57% (0.00574) | 66.81th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00090) | 40.16th | v3 (v2023.03.01) |
| Jun 24, 2024 | 0.08% (0.00083) | 35.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00083) | 33.55th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.24% (0.01242) | 30.15th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.24% (0.01242) | 0.00th | v1 |
References (11)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2dcab598484185dea7ec22219c76dcdd59e3cb90 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://www.debian.org/security/2017/dsa-3804 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2017/02/14/6 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/96222 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2017:1308 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-5986 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1420276 x_refsource_CONFIRMIssue TrackingPatch
- https://github.com/torvalds/linux/commit/2dcab598484185dea7ec22219c76dcdd59e3cb90 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-5986
- https://www.cve.org/CVERecord?id=CVE-2017-5986
Change history (0)
No recorded changes yet.