Out-of-bounds Read Affecting xen package, versions [,4.11.1)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.06% (30th percentile)

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  • Snyk IDSNYK-UNMANAGED-XEN-2383840
  • published26 Jan 2022
  • disclosed17 Aug 2018
  • creditUnknown

Introduced: 17 Aug 2018

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

How to fix?

Upgrade xen to version 4.11.1 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read. 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.

References

CVSS Scores

version 3.1