CVE-2019-17666

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-17 · updated 2026-06-17
Weakness: CWE-120

Description

rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a certain upper-bound check, leading to a buffer overflow.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.04, 19.10
Debian Linux: 8.0
Linux kernel: before 3.16.77; from 3.17 before 4.4.199; from 4.5 before 4.9.199; from 4.10 before 4.14.152; from 4.15 before 4.19.82; from 4.20 before 5.2 — fixed in 3.16.77, 4.14.152, 4.19.82, 4.4.199, 4.9.199, 5.2

How to fix

Upgrade to a fixed version: Linux kernel 3.16.77, 4.14.152, 4.19.82, 4.4.199. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00064.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html
https://access.redhat.com/errata/RHSA-2020:0328
https://access.redhat.com/errata/RHSA-2020:0339
https://access.redhat.com/errata/RHSA-2020:0543
https://access.redhat.com/errata/RHSA-2020:0661
https://access.redhat.com/errata/RHSA-2020:0740
https://arstechnica.com/information-technology/2019/10/unpatched-linux-flaw-may-let-attackers-crash-or-compromise-nearby-devices/
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRBP4O6D2SQ2NHCRHTJONGCZLWOIV5MN/
https://lkml.org/lkml/2019/10/16/1226

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