Upstream information

CVE-2018-15471 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
  SUSE
Base Score 7.8
Vector AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Access Vector Local
Access Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
SUSE Bugzilla entries: 1103277 [RESOLVED / FIXED], 1104641 [NEW], 1105026 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Module for Live Patching 15
  • kernel-livepatch-4_12_14-23-default >= 3-7.3
  • kernel-livepatch-4_12_14-25_13-default >= 3-2.3
  • kernel-livepatch-4_12_14-25_3-default >= 3-2.1
  • kernel-livepatch-4_12_14-25_6-default >= 3-2.1
  • kernel-livepatch-SLE15_Update_0 >= 3-7.3
  • kernel-livepatch-SLE15_Update_1 >= 3-2.1
  • kernel-livepatch-SLE15_Update_2 >= 3-2.1
  • kernel-livepatch-SLE15_Update_3 >= 3-2.3
Patchnames:
SUSE-SLE-Module-Live-Patching-15-2018-1868
SUSE-SLE-Module-Live-Patching-15-2018-1869
SUSE-SLE-Module-Live-Patching-15-2018-1870
SUSE-SLE-Module-Live-Patching-15-2018-2072
SUSE-SLE-Module-Live-Patching-15-2018-2076


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Module for Basesystem 15 GA kernel-source Released
SUSE Linux Enterprise Module for Development Tools 15 GA kernel-source Released
SUSE Linux Enterprise Server 11 SP4 kernel-source Analysis
SUSE Linux Enterprise Server 12 SP3 kernel-source Analysis