Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 1775047 (CVE-2019-19058) - CVE-2019-19058 kernel: A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c allows for a DoS
Summary: CVE-2019-19058 kernel: A memory leak in the alloc_sgtable() function in drive...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19058
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: 1775048 1776606 1829371 1829372 1829373 1829374 1829375
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-11-21 11:37 UTC by Marian Rehak
Modified: 2021-02-16 21:01 UTC (History)
44 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-09-29 21:59:01 UTC
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4416 0 None None None 2020-10-29 15:09:36 UTC
Red Hat Product Errata RHBA-2020:4417 0 None None None 2020-10-29 15:08:04 UTC
Red Hat Product Errata RHBA-2020:4418 0 None None None 2020-10-29 15:13:33 UTC
Red Hat Product Errata RHBA-2020:4419 0 None None None 2020-10-29 15:11:37 UTC
Red Hat Product Errata RHBA-2020:4420 0 None None None 2020-10-29 15:51:03 UTC
Red Hat Product Errata RHSA-2020:4060 0 None None None 2020-09-29 20:52:14 UTC
Red Hat Product Errata RHSA-2020:4062 0 None None None 2020-09-29 18:58:25 UTC

Description Marian Rehak 2019-11-21 11:37:49 UTC
A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering alloc_page() failures.

Upstream Issue:

https://github.com/torvalds/linux/commit/b4b814fec1a5a849383f7b3886b654a13abbda7d

Comment 1 Marian Rehak 2019-11-21 11:38:09 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1775048]

Comment 3 Petr Matousek 2020-04-29 13:15:20 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 4 Petr Matousek 2020-04-29 13:15:24 UTC
Mitigation:

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

Comment 6 errata-xmlrpc 2020-09-29 18:58:22 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4062 https://access.redhat.com/errata/RHSA-2020:4062

Comment 7 errata-xmlrpc 2020-09-29 20:52:09 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4060 https://access.redhat.com/errata/RHSA-2020:4060

Comment 8 Product Security DevOps Team 2020-09-29 21:59:01 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-19058


Note You need to log in before you can comment on or make changes to this bug.