Bug 1757358 (CVE-2017-18552) - CVE-2017-18552 kernel: OOB read and write in net/rds/af_rds.c
Summary: CVE-2017-18552 kernel: OOB read and write in net/rds/af_rds.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-18552
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: 1757359
Blocks: Embargoed1757360
TreeView+ depends on / blocked
 
Reported: 2019-10-01 10:27 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:20 UTC (History)
48 users (show)

Fixed In Version:
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Last Closed: 2020-05-06 10:56:16 UTC

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Description Dhananjay Arunesh 2019-10-01 10:27:19 UTC 
An issue was discovered in RDS protocol in the Linux kernel. There is an out of bounds write and read in the function rds_recv_track_latency which may allow an attacker with a local account to corrupt memory or escalate privileges.  

No Red Hat Enterprise Linux versions ship the affected code at this time.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=780e982905bef61d13496d9af5310bf4af3a64d3
Comment 1 Dhananjay Arunesh 2019-10-01 10:27:52 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1757359]
Comment 2 Justin M. Forbes 2019-10-01 13:43:21 UTC 
This was fixed in the 4.11 kernel and has never impacted any release of Fedora which is currently supported.
Comment 5 Wade Mealing 2020-02-17 04:40:16 UTC 
Mitigation:


As the RDS module will be auto-loaded when required, its use can be disabled  by preventing the module from loading with the following instructions:

# echo "install rds /bin/true" >> /etc/modprobe.d/disable-rds.conf 
 
The system will need to be restarted if the RDS modules are loaded. In most circumstances, the RDS kernel modules will be unable to be unloaded while any network interfaces are active and the protocol is in use.

If the system requires this module to work correctly, this mitigation may not be suitable.

If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
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