Bug 1775063 (CVE-2019-19054) - CVE-2019-19054 kernel: A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allows attackers to cause a DoS
Summary: CVE-2019-19054 kernel: A memory leak in the cx23888_ir_probe() function in dr...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19054
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1775117 1829354 1829355 1829356 1829357 1829358
Blocks: 1775104
TreeView+ depends on / blocked
 
Reported: 2019-11-21 12:00 UTC by msiddiqu
Modified: 2021-10-25 22:15 UTC (History)
42 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel. The CX23888 Integrated Consumer Infrared Controller probe code handles resource cleanup low memory conditions. A local attacker able to induce low memory conditions could use this flaw to crash the system. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-10-25 22:15:21 UTC
Embargoed:

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Description msiddiqu 2019-11-21 12:00:11 UTC 
A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c allows attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures

Upstream commit:

https://github.com/torvalds/linux/commit/a7b2df76b42bdd026e3106cf2ba97db41345a177
Comment 1 msiddiqu 2019-11-21 12:20:16 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1775117]
Comment 4 Petr Matousek 2020-04-29 12:53:02 UTC 
Statement:

This issue is rated as having Low impact because of the preconditions needed to trigger the resource cleanup code path (system-wide out-of-memory condition).
Comment 5 Petr Matousek 2020-04-29 12:53:06 UTC 
Mitigation:

In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module cx23885. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .
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