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Fencer Vulns
medium 5.5

CVE-2018-6554 json

Memory leak in the irda_bind function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17…

published 2018-09-04 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-18306

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

Memory leak in the irda_bind function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket.

Patch / fix

  • linux linux_kernel 4.17
  • linux Debian 14, Debian 13, Debian 12 4.17.3-1

debian advisories DEBIAN-CVE-2018-6554

  • linux Ubuntu 14.04 LTS 3.13.0-160.210
  • linux Ubuntu 16.04 LTS 4.4.0-137.163
  • linux Ubuntu 18.04 LTS 4.15.0-36.39
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1031.34
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1069.79
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1023.23
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1021.22~16.04.1
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1021.22

ubuntu advisories UBUNTU-CVE-2018-6554

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-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-syms-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-source-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.95.1
  • kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.95.1
  • lttng-modules SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 2.7.1-9.6.1
  • kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +3 more 4.4.121-92.95.1
  • kgraft-patch-SLE12-SP2_Update_25 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 +1 more 1-3.4.1

suse advisories SUSE-SU-2018:2908-2SUSE-SU-2018:3961-1SUSE-SU-2018:3084-1SUSE-SU-2018:3088-1SUSE-SU-2018:3083-1SUSE-SU-2018:2980-1

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-2018-6554 updated cvss 7.5

kernel: irda: Memory leak caused by repeated binds of irda socket

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more 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 Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    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

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • Linux Kernel Linux Kernel

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-772 Missing Release of Resource after Effective Lifetime
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.