Bug 1747216 (CVE-2019-15807) - CVE-2019-15807 kernel: Memory leak in drivers/scsi/libsas/sas_expander.c
Summary: CVE-2019-15807 kernel: Memory leak in drivers/scsi/libsas/sas_expander.c
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-15807
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: 1747217 1829965 1829966 1829967 1829968 1829969
Blocks: 1747218
TreeView+ depends on / blocked
 
Reported: 2019-08-29 23:56 UTC by Pedro Sampaio
Modified: 2021-02-16 21:26 UTC (History)
44 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A memory leak flaw was found in the Linux kernel. An error in the resource cleanup of the sas_ex_discover_expander function can allow an attacker to induce error conditions that could crash the system. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2020-09-29 21:58:25 UTC

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 15:09:08 UTC
Red Hat Product Errata RHBA-2020:4417 0 None None None 2020-10-29 15:07:41 UTC
Red Hat Product Errata RHBA-2020:4418 0 None None None 2020-10-29 15:13:01 UTC
Red Hat Product Errata RHBA-2020:4419 0 None None None 2020-10-29 15:11:53 UTC
Red Hat Product Errata RHBA-2020:4420 0 None None None 2020-10-29 15:50:39 UTC
Red Hat Product Errata RHSA-2020:4060 0 None None None 2020-09-29 20:51:17 UTC
Red Hat Product Errata RHSA-2020:4062 0 None None None 2020-09-29 18:57:45 UTC

Description Pedro Sampaio 2019-08-29 23:56:29 UTC 
In the Linux kernel before 5.1.13, there is a memory leak in drivers/scsi/libsas/sas_expander.c when SAS expander discovery fails. This will cause a BUG and denial of service.

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3b0541791453fbe7f42867e310e0c9eb6295364d

References:

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.13
Comment 1 Pedro Sampaio 2019-08-29 23:56:46 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1747217]
Comment 2 Justin M. Forbes 2019-08-30 12:16:52 UTC 
This was fixed for Fedora with the 5.1.13 stable update
Comment 5 Petr Matousek 2020-04-30 16:29:35 UTC 
Statement:

This issue is rated as having Low impact because of the preconditions needed to trigger the error/resource cleanup code path (system-wide out-of-memory condition, high privileges or physical access).
Comment 6 Petr Matousek 2020-04-30 16:29:39 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 8 errata-xmlrpc 2020-09-29 18:57:42 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 9 errata-xmlrpc 2020-09-29 20:51:13 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 10 Product Security DevOps Team 2020-09-29 21:58:25 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-2019-15807
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