5.5

CVE-2018-17972: canonical ubuntu_linux

Modified
AliasesUBUNTU-CVE-2018-17972DEBIAN-CVE-2018-17972
Published 03-10-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-17972 is a medium (CVSS 5.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 30.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 19 · Related 13
DLA-1715-1DLA-1731-1RHSA-2019:0512RHSA-2019:0514RHSA-2019:0831RHSA-2019:2473

Timeline

  1. 03-10-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.36% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu18 products
  • linux< 3.13.0-165.215 | < 4.4.0-139.165 | < 4.15.0-44.47
  • linux-aws< 4.4.0-1034.37 | < 4.4.0-1072.82 | < 4.15.0-1032.34
  • linux-aws-hwe< 4.15.0-1032.34~16.04.1
  • linux-azure< 4.15.0-1037.39~14.04.2 | < 4.15.0-1037.39~16.04.1 | < 4.15.0-1037.39
  • linux-azure-fdeAll versions (No fix recorded)
Redhat6 products
Debian2 products
Canonical1 product
Linux1 product

5 vendors · 28 products

References

36 links
Show all 36 references