Cleartext Transmission of Sensitive Information Affecting linux-4.9 package, versions <4.9.168-1+deb9u3~deb8u1

Q: How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.168-1+deb9u3~deb8u1 or higher.

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Snyk IDSNYK-DEBIAN8-LINUX49-450074
published7 Jan 2019
disclosed7 Jan 2019

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Introduced: 7 Jan 2019

CVE-2019-5489 (opens in a new tab) CWE-319 (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.168-1+deb9u3~deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.9 package and not the linux-4.9 package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

The mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13 allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may be possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server.