Bug 1775042 (CVE-2019-19059) - CVE-2019-19059 kernel: Multiple memory leaks in the iwl_pcie_ctxt_info_gen3_init() function in drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c allows for a DoS
Summary: CVE-2019-19059 kernel: Multiple memory leaks in the iwl_pcie_ctxt_info_gen3_i...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19059
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: 1775043 1776606 1829391 1829392 1829393 1829394
Blocks: 1775045
TreeView+ depends on / blocked
 
Reported: 2019-11-21 11:35 UTC by Marian Rehak
Modified: 2021-02-16 21:00 UTC (History)
44 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the way the Intel Wireless driver in the Linux kernel handled resource cleanup during Gen 3 device initialization. This flaw allows an attacker with the ability to restrict access to DMA coherent memory on device initialization, to crash the system.
Clone Of:
Environment:
Last Closed: 2020-09-29 21:58:58 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 15:08:02 UTC
Red Hat Product Errata RHBA-2020:4418 0 None None None 2020-10-29 15:13:31 UTC
Red Hat Product Errata RHBA-2020:4419 0 None None None 2020-10-29 15:11:36 UTC
Red Hat Product Errata RHBA-2020:4420 0 None None None 2020-10-29 15:50:59 UTC
Red Hat Product Errata RHSA-2020:4060 0 None None None 2020-09-29 20:52:04 UTC
Red Hat Product Errata RHSA-2020:4062 0 None None None 2020-09-29 18:58:21 UTC

Description Marian Rehak 2019-11-21 11:35:16 UTC 
Multiple memory leaks in the iwl_pcie_ctxt_info_gen3_init() function in drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption) by triggering iwl_pcie_init_fw_sec() or dma_alloc_coherent() failures.

Upstream Issue:

https://github.com/torvalds/linux/commit/0f4f199443faca715523b0659aa536251d8b978f
Comment 1 Marian Rehak 2019-11-21 11:35:45 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1775043]
Comment 3 Petr Matousek 2020-04-29 13:30:40 UTC 
Statement:

This issue is rated as having Low impact because of the preconditions needed to trigger the resource cleanup code path (ability to restrict access to dma coherent memory on device initialization).
Comment 4 Petr Matousek 2020-04-29 13:30:44 UTC 
Mitigation:

In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module iwlwifi. 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 18:58:18 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 20:52:01 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 21:58:58 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-2019-19059
Note You need to log in before you can comment on or make changes to this bug.