Bug 1694812 (CVE-2019-3896) - CVE-2019-3896 kernel: Double free in lib/idr.c
Summary: CVE-2019-3896 kernel: Double free in lib/idr.c
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-3896
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=important,public=20190617,repo...
Depends On: 1698139 1698140 1698141 1698142 1715283
Blocks: 1694813
TreeView+ depends on / blocked
 
Reported: 2019-04-01 18:29 UTC by Pedro Sampaio
Modified: 2019-07-12 13:06 UTC (History)
47 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A double-free can happen in idr_remove_all() in lib/idr.c in the Linux kernel. An unprivileged local attacker can use this flaw for a privilege escalation or for a system crash and a denial of service (DoS).
Clone Of:
Environment:
Last Closed: 2019-07-12 13:06:55 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:1488 None None None 2019-06-17 18:24:19 UTC
Red Hat Product Errata RHSA-2019:1489 None None None 2019-06-17 19:28:01 UTC
Red Hat Product Errata RHSA-2019:1490 None None None 2019-06-17 19:29:00 UTC

Description Pedro Sampaio 2019-04-01 18:29:08 UTC
A double-free can happen in idr_remove_all() in lib/idr.c in the Linux kernel. An unprivileged local attacker can use this flaw for a privilege escalation or for a system crash and a denial of service (DoS).

References:

https://marc.info/?t=127366612300001&r=1&w=2

https://marc.info/?l=linux-kernel&m=127422151819010&w=2

https://lore.kernel.org/patchwork/patch/205534/

https://marc.info/?t=136035740900005&r=1&w=2

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2dcb22b346be

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=326cf0f0f308

Comment 2 Vladis Dronov 2019-04-09 15:45:36 UTC
Acknowledgments:

Name: Eiichi Tsukata

Comment 11 errata-xmlrpc 2019-06-17 18:24:17 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:1488 https://access.redhat.com/errata/RHSA-2019:1488

Comment 12 errata-xmlrpc 2019-06-17 19:27:59 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.6 Advanced Update Support

Via RHSA-2019:1489 https://access.redhat.com/errata/RHSA-2019:1489

Comment 13 errata-xmlrpc 2019-06-17 19:28:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2019:1490 https://access.redhat.com/errata/RHSA-2019:1490

Comment 14 Product Security DevOps Team 2019-07-12 13:06:55 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-2019-3896


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