7.8

CVE-2017-2647: linux linux_kernel NULL Pointer Dereference

Modified
AliasesRHSA-2020:3836UBUNTU-CVE-2017-2647DEBIAN-CVE-2017-2647
Published 31-03-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-2647 is a high (CVSS 7.8) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 35.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.0 (NVD)
EPSS score
0.41%
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 12 · Related 6
DLA-922-1RHSA-2017:1842RHSA-2017:2077RHSA-2017:2437RHSA-2017:2444RHSA-2020:3548

Timeline

  1. 31-03-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.41% on 05-10-2026

05-10-202604-11-2026

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.

Ubuntu14 products
  • linux< 3.13.0-164.214
  • linux-azure-6.11All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-azure-fde-5.15All versions (No fix recorded)
  • linux-gcp-6.11All versions (No fix recorded)
Redhat7 products
  • kernel< 0:2.6.32-504.84.1.el6
  • kernel-debug< 0:2.6.32-504.84.1.el6
  • kernel-debug-debuginfo< 0:2.6.32-504.84.1.el6
  • kernel-debug-devel< 0:2.6.32-504.84.1.el6
  • kernel-debuginfo< 0:2.6.32-504.84.1.el6
Debian1 product
  • linux< 4.0.2-1
Linux1 product

4 vendors · 23 products

References

20 links
Show all 20 references