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Vulnerability record · CVE-2019-17133 · published 4 October 2019

CVE-2019-17133: Linux kernel classic buffer overflow vulnerability

Linux · Linux Kernel

In the Linux kernel through 5.3.2, cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c does not reject a long SSID IE, leading to a Buffer Overflow.

9.8 CVSS 3.1 Critical EPSS 6.7% · top 6.3% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
6.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
48References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel through 5.3.2, cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c does not reject a long SSID IE, leading to a Buffer Overflow.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00064.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2020:0174 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0374 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0375 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0543 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0592 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0609 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0653 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0661 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0664 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0790 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html Third Party Advisory
https://marc.info/?l=linux-wireless&m=157018270915487&w=2 Mailing ListPatchThird Party Advisory
https://seclists.org/bugtraq/2019/Nov/11 Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20191031-0005/ Third Party Advisory
https://usn.ubuntu.com/4208-1/ Third Party Advisory
https://usn.ubuntu.com/4210-1/ Third Party Advisory
https://usn.ubuntu.com/4211-1/ Third Party Advisory
https://usn.ubuntu.com/4211-2/ Third Party Advisory
https://usn.ubuntu.com/4226-1/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00064.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2020:0174 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0374 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0375 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0543 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0592 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0609 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0653 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0661 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0664 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0790 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html Third Party Advisory
https://marc.info/?l=linux-wireless&m=157018270915487&w=2 Mailing ListPatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-17133), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.