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Double Free Affecting linux-4.9 package, versions <4.9.110-3+deb9u5~deb8u1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.26% (66th percentile)

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  • Snyk IDSNYK-DEBIAN8-LINUX49-263006
  • published22 Aug 2018
  • disclosed21 Aug 2018
Report a new vulnerability Found a mistake?

Introduced: 21 Aug 2018

CVE-2018-10902  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.110-3+deb9u5~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.

It was found that the raw midi kernel driver does not protect against concurrent access which leads to a double realloc (double free) in snd_rawmidi_input_params() and snd_rawmidi_output_status() which are part of snd_rawmidi_ioctl() handler in rawmidi.c file. A malicious local attacker could possibly use this for privilege escalation.

References