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Bug 1527393 - (CVE-2018-7492) CVE-2018-7492 kernel: Null pointer dereference in net/rds/rdma.c:__rds_rdma_map() allowing local attackers to cause denial-of-service
CVE-2018-7492 kernel: Null pointer dereference in net/rds/rdma.c:__rds_rdma_m...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20171206,repor...
: Security
Depends On: 1549223 1527395 1527399 1549224
Blocks: 1527397
  Show dependency tree / graph
 
Reported: 2017-12-19 06:02 EST by Adam Mariš
Modified: 2018-08-28 18:28 EDT (History)
46 users (show)

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Doc Text:
A NULL pointer dereference was found in net/rds/rdma.c:__rds_rdma_map() function in the Linux kernel allowing local attackers to cause a system panic and a denial-of-service.
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-12-19 06:02:21 EST 
A NULL pointer dereference was found in net/rds/rdma.c:__rds_rdma_map() function in the Linux kernel allowing local attackers to cause a system panic and a denial-of-service.

References:

https://patchwork.kernel.org/patch/10096441/

https://xorl.wordpress.com/2017/12/18/linux-kernel-rdma-null-pointer-dereference/

http://seclists.org/oss-sec/2018/q1/191

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f3069c6d33f6ae63a1668737bc78aaaa51bff7ca
Comment 1 Adam Mariš 2017-12-19 06:03:31 EST 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1527395]
Comment 3 Justin M. Forbes 2017-12-19 10:29:08 EST 
This was fixed in the kernel-4.14.7 update for Fedora.
Comment 7 Vladis Dronov 2018-02-26 13:24:04 EST 
Statement:

This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future Linux kernel updates for the respective releases may address this issue.

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 7, its real-time kernel, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE, as a code with the flaw is not built and shipped with the products listed.
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