Information Exposure Affecting linux-4.9 package, versions <4.9.189-3+deb9u1~deb8u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (24th percentile)

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  • Snyk IDSNYK-DEBIAN8-LINUX49-469482
  • published4 Sept 2019
  • disclosed4 Sept 2019

Introduced: 4 Sep 2019

CVE-2019-15902  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.189-3+deb9u1~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.

A backporting error was discovered in the Linux stable/longterm kernel 4.4.x through 4.4.190, 4.9.x through 4.9.190, 4.14.x through 4.14.141, 4.19.x through 4.19.69, and 5.2.x through 5.2.11. Misuse of the upstream "x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()" commit reintroduced the Spectre vulnerability that it aimed to eliminate. This occurred because the backport process depends on cherry picking specific commits, and because two (correctly ordered) code lines were swapped.

CVSS Base Scores

version 3.1