Out-of-bounds Read Affecting linux-4.9 package, versions <4.9.144-3.1~deb8u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-DEBIAN8-LINUX49-340559
  • published22 Aug 2018
  • disclosed17 Aug 2018

Introduced: 17 Aug 2018

CVE-2018-15471  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.144-3.1~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.

An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks.

CVSS Base Scores

version 3.1