CVE-2018-7492

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-02-26 · updated 2026-06-17
Weakness: CWE-476

Description

A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to RDS_GET_MR and RDS_GET_MR_FOR_DEST.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 17.10
Debian Linux: 7.0, 8.0
Linux kernel: before 4.14.7 — fixed in 4.14.7

How to fix

Upgrade to a fixed version: Linux kernel 4.14.7. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3069c6d33f6ae63a1668737bc78aaaa51bff7ca
http://www.securityfocus.com/bid/103185
https://bugzilla.redhat.com/show_bug.cgi?id=1527393
https://github.com/torvalds/linux/commit/f3069c6d33f6ae63a1668737bc78aaaa51bff7ca
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
https://patchwork.kernel.org/patch/10096441/
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3674-1/
https://usn.ubuntu.com/3674-2/
https://usn.ubuntu.com/3677-1/
https://usn.ubuntu.com/3677-2/

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