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Fencer Vulns
medium 5.5

CVE-2018-10689 json

blktrace (aka Block IO Tracing) 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the dev_map_read function in btt…

published 2018-05-03 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2760

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

blktrace (aka Block IO Tracing) 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the dev_map_read function in btt/devmap.c because the device and devno arrays are too small, as demonstrated by an invalid free when using the btt program with a crafted file.

Patch / fix

  • blktrace Debian 14, Debian 13, Debian 12 1.2.0-1

debian advisories DEBIAN-CVE-2018-10689

  • blktrace Ubuntu 14.04 LTS 1.0.5-1+deb8u1build0.14.04.1
  • blktrace Ubuntu 16.04 LTS 1.1.0-2+deb9u1build0.16.04.1
  • blktrace Ubuntu 18.04 LTS 1.1.0-2+deb9u1build0.18.04.1

ubuntu advisories UBUNTU-CVE-2018-10689

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

  • blktrace RHEL 7 1.0.5-9.el7

red hat advisories RHSA-2019:2162

  • blktrace SLES for SAP 12 SP5, SLES 12 SP5 1.0.5-8.5.74
  • blktrace SLE Module for Development Tools 15 1.1.0+git.20170126-3.3.28

suse advisories SUSE-SU-2020:2942-1SUSE-SU-2019:0919-1

  • blktrace openSUSE Leap 15.0 1.1.0+git.20170126-lp150.2.3.1

opensuse advisories openSUSE-SU-2019:1224-1

  • blktrace CBL-Mariner 2.0 1.2.0-6

azure linux advisories AZL-6328

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2018-10689 updated cvss 4.8

blktrace: buffer overflow in the dev_map_read function in btt/devmap.c

  • Red Hat Enterprise Linux 5 blktrace Red Hat Enterprise Linux 6 blktrace
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) blktrace 1.0.5-9.el7 Red Hat Enterprise Linux ComputeNode (v. 7) blktrace 1.0.5-9.el7 Red Hat Enterprise Linux Server (v. 7) blktrace 1.0.5-9.el7 Red Hat Enterprise Linux Workstation (v. 7) blktrace 1.0.5-9.el7
    fixed: vendor fix RHSA-2019:2162
  • Red Hat Enterprise Linux 8 blktrace, iowatcher
    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

1.85% chance of exploitation in the next 30 days, higher than 79% 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:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.