vulnerability
Red Hat OpenShift: CVE-2019-18282: kernel: The flow_dissector feature allows device tracking
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Jan 16, 2020 | Dec 29, 2020 | Apr 11, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Jan 16, 2020
Added
Dec 29, 2020
Modified
Apr 11, 2025
Description
The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.
Solution
linuxrpm-upgrade-redhat-coreos
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