CVE-2017-6214: linux linux_kernel Loop with Unreachable Exit Condition
Vulnerability summary
CVE-2017-6214 is a high (CVSS 7.5) Loop with Unreachable Exit Condition vulnerability in linux linux_kernel. EPSS estimates a 4.67% chance of exploitation in the next 30 days, higher than 91.7% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 5% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 19 · Related 11Timeline
- 23-02-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The tcp_splice_read function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service (infinite loop and soft lockup) via vectors involving a TCP packet with the URG flag.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
4.67%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.67% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat22 products
- kernel< 0:2.6.32-696.3.1.el6
- kernel-abi-whitelists< 0:2.6.32-696.3.1.el6
- kernel-bootwrapper< 0:2.6.32-696.3.1.el6
- kernel-debug< 0:2.6.32-696.3.1.el6
- kernel-debug-debuginfo< 0:2.6.32-696.3.1.el6
Ubuntu16 products
- linux< 3.13.0-132.181 | < 4.4.0-75.96
- linux-aws< 4.4.0-1016.25
- linux-azureAll versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
- linux-gcpAll versions (No fix recorded)
Debian1 product
- linux< 4.9.13-1
Linux1 product
- linux_kernel≤ 4.9.10
4 vendors · 40 products
References
24 links- source.android.com/security/bulletin/2017-09-01X Refsource CONFIRM
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11X Refsource CONFIRMRelease NotesVendor AdvisoryREPORT
Show all 24 references
- github.com/torvalds/linux/commit/ccf7abb93af09ad0868ae9033d1ca8108bdaec82X Refsource CONFIRMIssue TrackingPatchThird Party AdvisoryREPORT
