CVE-2017-5986 — Race condition in the sctp_wait_for_sndbuf function in net/sctp/socket
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.
Published
2017-02-18T21:59:00.130
Last modified
2026-05-13T00:24:29.033
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C
01What is this vulnerability?
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.
02Affected products
No structured affected-product list available — see references below for vendor advisories.
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2017-02-18T21:59:00.130
- Last modified: 2026-05-13T00:24:29.033
09References
- git.kernel.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2dcab5…
- www.debian.org — http://www.debian.org/security/2017/dsa-3804
- www.kernel.org — http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11
- www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/14/6
- www.securityfocus.com — http://www.securityfocus.com/bid/96222
- access.redhat.com — https://access.redhat.com/errata/RHSA-2017:1308
- bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1420276
- github.com — https://github.com/torvalds/linux/commit/2dcab598484185dea7ec22219c76dcdd59e3cb9…
- git.kernel.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2dcab5…
- www.debian.org — http://www.debian.org/security/2017/dsa-3804
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