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01 Record

CVE-2018-18281

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.10% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 65.6% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-10-30 18:00Z8 YR AGO
Last updated
2024-08-05 11:08Z2 YR AGO
Reserved
2018-10-12
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-459Incomplete CleanupBase
  • CWE-672Operation on a Resource after Expiration or ReleaseClass
Data version
5.1
Document digest
1a2c25d35871fd75c5f973b75a6f7b5145d93e4e664441b6a3a2f783ff80c0dc

05 Affected products

VendorProductVersionsPlatforms
canonicalubuntu_linuxNot specified—
debiandebian_linuxNot specified—
linuxlinux_kernelNot specified—
redhatenterprise_linuxNot specified—
redhatenterprise_mrgNot specified—
redhatrhel_ausNot specified—
redhatrhel_e4sNot specified—
redhatrhel_eusNot specified—
redhatrhel_extras_rtNot specified—
redhatrhel_tusNot specified—

06 References

07 Fixed in

Debian 12

  • linux
    Fixed in 4.18.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 4.18.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 4.18.20-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • linux
    Fixed in 3.13.0-165.215
  • linux-aws
    Fixed in 4.4.0-1038.41
  • linux-azure
    Fixed in 4.15.0-1037.39~14.04.2
  • linux-lts-xenial
    Fixed in 4.4.0-142.168~14.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux
    Fixed in 4.4.0-142.168
  • linux-aws
    Fixed in 4.4.0-1075.85
  • linux-aws-hwe
    Fixed in 4.15.0-1032.34~16.04.1
  • linux-azure
    Fixed in 4.15.0-1037.39~16.04.1
  • linux-gcp
    Fixed in 4.15.0-1027.28~16.04.1
  • linux-hwe
    Fixed in 4.15.0-45.48~16.04.1
  • linux-kvm
    Fixed in 4.4.0-1040.46
  • linux-raspi2
    Fixed in 4.4.0-1103.111
  • linux-snapdragon
    Fixed in 4.4.0-1107.112

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux
    Fixed in 4.15.0-44.47
  • linux-aws
    Fixed in 4.15.0-1032.34
  • linux-azure
    Fixed in 4.15.0-1037.39
  • linux-gcp
    Fixed in 4.15.0-1027.28
  • linux-kvm
    Fixed in 4.15.0-1029.29
  • linux-oem
    Fixed in 4.15.0-1033.38
  • linux-raspi2
    Fixed in 4.15.0-1031.33
  • linux-snapdragon
    Fixed in 4.15.0-1053.57

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • linux-azure-fde
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • linux-intel-iot-realtime
    No fix yet
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • linux-raspi-realtime
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro FIPS-updates 16.04 LTS

  • linux-fips
    Fixed in 4.4.0-1008.10
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.