CVE-2018-5333

Description

In the Linux kernel through 4.14.13, the rds_cmsg_atomic function in net/rds/rdma.c mishandles cases where page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer dereference.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.75% Top 20%
Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4187 third party advisory vendor advisory
https://usn.ubuntu.com/3617-1/ third party advisory vendor advisory
https://usn.ubuntu.com/3619-2/ third party advisory vendor advisory
https://usn.ubuntu.com/3617-3/ third party advisory vendor advisory
https://usn.ubuntu.com/3583-2/ third party advisory vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d11f77f84b27cef452cee332f4e469503084737 issue tracking patch vendor advisory
https://usn.ubuntu.com/3632-1/ third party advisory vendor advisory
https://usn.ubuntu.com/3583-1/ third party advisory vendor advisory
http://www.securityfocus.com/bid/102510 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2018:0470 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html third party advisory mailing list
https://usn.ubuntu.com/3617-2/ third party advisory vendor advisory
https://github.com/torvalds/linux/commit/7d11f77f84b27cef452cee332f4e469503084737 patch vendor advisory
https://usn.ubuntu.com/3619-1/ third party advisory vendor advisory
http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html

Frequently Asked Questions

What is the severity of CVE-2018-5333?
CVE-2018-5333 has been scored as a medium severity vulnerability.
How to fix CVE-2018-5333?
To fix CVE-2018-5333, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-5333 being actively exploited in the wild?
It is possible that CVE-2018-5333 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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