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CVE-2017-2636
Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of…
- 7.0HighCVSS base score
- 1.0%Exploitation in 30 daysEPSS · top 36% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.0% · top 36% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.0.
Affected products
n/a
- affected n/a
References
16
- RHSA-2017:0892 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 96732 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1037963 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- RHSA-2017:0932 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [oss-security] 20170307 Linux kernel: CVE-2017-2636: local privilege escalation flaw in n_hdlc (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1428319 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.html (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2017:1125 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:0933 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:1232 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:0931 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- DSA-3804 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2017:1233 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:1488 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:0986 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:1126 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-11797 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-2636)Record last updated .