Bug 1747334 (CVE-2019-15666) - CVE-2019-15666 kernel: out-of-bounds array access in __xfrm_policy_unlink
Summary: CVE-2019-15666 kernel: out-of-bounds array access in __xfrm_policy_unlink
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-15666
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: 1718812 1747335 1803667 1803668 1803669 1803670 1803671
Blocks: 1747336
TreeView+ depends on / blocked
 
Reported: 2019-08-30 07:12 UTC by Dhananjay Arunesh
Modified: 2020-05-21 06:20 UTC (History)
48 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel. When xfrm policy removal occurs a system crash could occur. These policy changes generally occur through the ip command or a netlink socket.
Clone Of:
Environment:
Last Closed: 2020-04-16 16:31:57 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1493 None None None 2020-04-16 14:38:41 UTC

Description Dhananjay Arunesh 2019-08-30 07:12:00 UTC
A flaw regarding the removal of xfrm policies from the kernel may possibly crash the system or corrupt memory or escalate privilges . Policies addition or removal is a privileged operation (usually done through the ip command) or via a netlink socket.

A local privileged user (with CAP_NET_ADMIN or root) is required to exploit this condition.  With this limitation, this issue is rated as Moderate.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b805d78d300bcf2c83d6df7da0c818b0fee41427
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.19

Comment 1 Dhananjay Arunesh 2019-08-30 07:12:17 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1747335]

Comment 2 Justin M. Forbes 2019-08-30 12:14:14 UTC
This was fixed for Fedora with the 5.0.19 stable update

Comment 8 Eric Christensen 2020-03-02 21:48:25 UTC
Statement:

A local privileged user (with CAP_NET_ADMIN or root) is required to exploit this condition. With this limitation, this issue is rated as Moderate.

Comment 9 errata-xmlrpc 2020-04-16 14:38:38 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1493 https://access.redhat.com/errata/RHSA-2020:1493

Comment 10 Product Security DevOps Team 2020-04-16 16:31:57 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-2019-15666


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