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Fencer Vulns
medium 5.5

CVE-2017-5549 json

The klsi_105_get_line_state function in drivers/usb/serial/kl5kusb105.c in the Linux kernel before 4.9.5 places uninitialized heap-memory c…

published 2017-02-06 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14650

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

The klsi_105_get_line_state function in drivers/usb/serial/kl5kusb105.c in the Linux kernel before 4.9.5 places uninitialized heap-memory contents into a log entry upon a failure to read the line status, which allows local users to obtain sensitive information by reading the log.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.9.6-1

debian advisories DEBIAN-CVE-2017-5549

  • linux Ubuntu 14.04 LTS 3.13.0-157.207
  • linux Ubuntu 16.04 LTS 4.4.0-63.84
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1003.12
  • linux-hwe Ubuntu 16.04 LTS 4.10.0-32.36~16.04.1
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1044.51
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-63.84~14.04.2
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1047.51

ubuntu advisories UBUNTU-CVE-2017-5549

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

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-2017-5549 updated cvss 3.3

kernel: Incorrect line-state error handling

  • 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, python-perf, kernel-kdump, +8 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix planned “Will not fix”

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 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-532 Insertion of Sensitive Information into Log File
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.