CVE-2017-18509

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.83% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 57.4% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-08-13 13:17Z7 YR AGO

Last updated

2024-08-05 21:28Z2 YR AGO

Reserved

2019-08-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base

Data version

5.1

Document digest

5865bbe792596308b7bc99e6a0b7822d457672393e233531c5ce55c78055dd42

• pulsesecurity.co.nzhttps://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpfx_refsource_MISC
• salsa.debian.orghttps://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32x_refsource_MISC
• lists.openwall.nethttps://lists.openwall.net/netdev/2017/12/04/40x_refsource_MISC
• github.comhttps://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745x_refsource_MISC
• git.kernel.orghttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745x_refsource_MISC
• www.debian.orgDSA-4497https://www.debian.org/security/2019/dsa-4497vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20190814 [SECURITY] [DLA 1884-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2019/08/msg00016.htmlmailing-listx_refsource_MLIST
• seclists.org20190814 [slackware-security] Slackware 14.2 kernel (SSA:2019-226-01)https://seclists.org/bugtraq/2019/Aug/26mailing-listx_refsource_BUGTRAQ
• lists.debian.org[debian-lts-announce] 20190814 [SECURITY] [DLA 1885-1] linux-4.9 security updatehttps://lists.debian.org/debian-lts-announce/2019/08/msg00017.htmlmailing-listx_refsource_MLIST
• packetstormsecurity.comhttp://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlx_refsource_MISC
• support.f5.comhttps://support.f5.com/csp/article/K41582535x_refsource_CONFIRM
• usn.ubuntu.comUSN-4145-1https://usn.ubuntu.com/4145-1/vendor-advisoryx_refsource_UBUNTU
• support.f5.comhttps://support.f5.com/csp/article/K41582535?utm_source=f5support&amp%3Butm_medium=RSSx_refsource_CONFIRM