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Fencer Vulns
high 7.8

CVE-2018-5332 json

In the Linux kernel through 3.2, the rds_message_alloc_sgs() function does not validate a value that is used during DMA page allocation, le…

published 2018-01-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17111

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

In the Linux kernel through 3.2, the rds_message_alloc_sgs() function does not validate a value that is used during DMA page allocation, leading to a heap-based out-of-bounds write (related to the rds_rdma_extra_size function in net/rds/rdma.c).

Patch / fix

  • linux linux_kernel 3.2.99, 3.16.54, 3.18.92, 4.1.50, 4.4.112, 4.9.77, 4.14.44
  • linux Debian 14, Debian 13, Debian 12 4.14.17-1

debian advisories DEBIAN-CVE-2018-5332

  • linux Ubuntu 14.04 LTS 3.13.0-144.193
  • linux Ubuntu 16.04 LTS 4.4.0-119.143
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1016.16
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1054.63
  • linux-gcp Ubuntu 16.04 LTS 4.13.0-1012.16
  • linux-hwe Ubuntu 16.04 LTS 4.13.0-41.46~16.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1020.25
  • linux-oem Ubuntu 16.04 LTS 4.13.0-1022.24

ubuntu advisories UBUNTU-CVE-2018-5332

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt enterprise mrg 2 1:3.10.0-693.21.1.rt56.607.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.21.1.rt56.607.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.21.1.rt56.607.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.21.1.rt56.607.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.21.1.rt56.607.el6rt

red hat advisories RHSA-2018:0470

  • kernel-rt SLE Real Time 12 SP3 4.4.120-3.8.1
  • kernel-syms-rt SLE Real Time 12 SP3 4.4.120-3.8.1
  • kernel-rt_debug SLE Real Time 12 SP3 4.4.120-3.8.1
  • kernel-source-rt SLE Real Time 12 SP3 4.4.120-3.8.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.85.1
  • kernel-xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1
  • kernel-syms SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1
  • kernel-source SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.85.1

suse advisories SUSE-SU-2018:0986-1SUSE-SU-2018:0848-1SUSE-SU-2018:0841-1SUSE-SU-2018:0834-1SUSE-SU-2018:0660-1SUSE-SU-2018:0555-1

  • kernel-source openSUSE Tumbleweed 5.14.6-1.4
  • kernel-source openSUSE Tumbleweed 6.6.17-1.1

opensuse advisories openSUSE-SU-2024:10728-1openSUSE-SU-2024:13704-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-5332 updated cvss 5.5

kernel: rds_message_alloc_sgs() function doesn't validate value used during DMA page allocation causes heap out-of-bounds write

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: no fix planned “Will not fix”
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.21.1.rt56.607.el6rt, kernel-rt-trace 3.10.0-693.21.1.rt56.607.el6rt, kernel-rt-vanilla 3.10.0-693.21.1.rt56.607.el6rt, kernel-rt-firmware 3.10.0-693.21.1.rt56.607.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.21.1.rt56.607.el6rt
    fixed: vendor fix RHSA-2018:0470
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.