Bug 1777418 (CVE-2019-18808) - CVE-2019-18808 kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c
Summary: CVE-2019-18808 kernel: memory leak in ccp_run_sha_cmd() function in drivers/c...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-18808
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1777421 1825132 1825133 1825134 1825135 1825136
Blocks: 1777489
TreeView+ depends on / blocked
 
Reported: 2019-11-27 15:25 UTC by Dhananjay Arunesh
Modified: 2021-02-16 20:58 UTC (History)
47 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-07-07 19:27:46 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 15:09:42 UTC
Red Hat Product Errata RHBA-2020:4417 0 None None None 2020-10-29 15:08:10 UTC
Red Hat Product Errata RHBA-2020:4418 0 None None None 2020-10-29 15:13:36 UTC
Red Hat Product Errata RHBA-2020:4419 0 None None None 2020-10-29 15:11:42 UTC
Red Hat Product Errata RHBA-2020:4420 0 None None None 2020-10-29 15:51:06 UTC
Red Hat Product Errata RHSA-2020:2854 0 None None None 2020-07-07 13:18:44 UTC
Red Hat Product Errata RHSA-2020:4060 0 None None None 2020-09-29 20:52:24 UTC
Red Hat Product Errata RHSA-2020:4062 0 None None None 2020-09-29 18:58:31 UTC
Red Hat Product Errata RHSA-2020:4431 0 None None None 2020-11-04 00:49:51 UTC
Red Hat Product Errata RHSA-2020:4609 0 None None None 2020-11-04 02:21:46 UTC

Description Dhananjay Arunesh 2019-11-27 15:25:00 UTC 
A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel allows attackers to cause a denial of service (memory consumption)

Reference:
https://github.com/torvalds/linux/commit/128c66429247add5128c03dc1e144ca56f05a4e2
Comment 1 Dhananjay Arunesh 2019-11-27 15:25:27 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1777421]
Comment 2 Petr Matousek 2020-04-17 07:06:02 UTC 
Statement:

This issue is rated as having Moderate impact because it affects only specific hardware enabled systems.
Comment 3 Petr Matousek 2020-04-17 07:06:05 UTC 
Mitigation:

In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module ccp. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278
Comment 5 errata-xmlrpc 2020-07-07 13:18:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:2854 https://access.redhat.com/errata/RHSA-2020:2854
Comment 6 Product Security DevOps Team 2020-07-07 19:27:46 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-2019-18808
Comment 7 errata-xmlrpc 2020-09-29 18:58:27 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 8 errata-xmlrpc 2020-09-29 20:52:27 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 24 errata-xmlrpc 2020-11-04 00:49:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4431 https://access.redhat.com/errata/RHSA-2020:4431
Comment 25 errata-xmlrpc 2020-11-04 02:21:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4609 https://access.redhat.com/errata/RHSA-2020:4609
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