CVE-2019-18282

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

published January 16, 2020

CVSS
—
EPSS
3%
Percentile
85.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02605 · 85.3th percentile
Published
2020-01-16T15:22Z
EPSS history
Timeline
  • 16 JAN 15:22Z
    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
    cvelistv5