Wind River Support Network


LIN1019-3954 : Security Advisory - linux - CVE-2019-18282

Created: Jan 18, 2020    Updated: Jan 22, 2020
Resolved Date: Jan 21, 2020
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 19
Component/s: Kernel


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 hashmd value as a secret, and because jhash (instead of siphash) is used. The hashmd 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.

CREATE(Triage):(User=admin) [CVE-2019-18282|]


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