Bug 1610555 (CVE-2018-15471) - CVE-2018-15471 kernel: net: xen: Linux netback driver OOB access in hash handling (XSA-270)
Summary: CVE-2018-15471 kernel: net: xen: Linux netback driver OOB access in hash hand...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-15471
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1618413 1618414
Blocks: 1610556
TreeView+ depends on / blocked
 
Reported: 2018-07-31 22:05 UTC by Laura Pardo
Modified: 2019-09-29 14:46 UTC (History)
57 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw in the netback module allowed frontends to control mapping of requests to request queues. An attacker can change this mapping by requesting invalid mapping requests allowing the (usually privileged) backend to access out-of-bounds memory access for reading and writing.
Clone Of:
Environment:
Last Closed: 2018-08-30 09:06:26 UTC


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Description Laura Pardo 2018-07-31 22:05:59 UTC
Linux's 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 was missing or flawed. 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.

Red Hat Enterprise Linux 5 is the only supported version of Red Hat Enterprise Linux that ships with Xen support, and does not include the relevant build time configuration that would enable this code to be included.

Additional information:

Xen security advisory - https://xenbits.xen.org/xsa/advisory-270.html

Comment 3 Laura Pardo 2018-08-16 14:59:41 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1618414]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1618413]


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