5.5

CVE-2017-12192: linux linux_kernel NULL Pointer Dereference

Modified
AliasesRHSA-2020:2430UBUNTU-CVE-2017-12192DEBIAN-CVE-2017-12192
Published 12-10-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-12192 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 39% 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
0.45%
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 7 · Related 3
RHSA-2018:0151RHSA-2018:0152RHSA-2018:0181RHSA-2018:0654USN-3469-1USN-3469-2

Timeline

  1. 12-10-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.45% 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.

Redhat22 products
  • kernel< 0:2.6.32-754.30.2.el6
  • kernel-abi-whitelists< 0:2.6.32-754.30.2.el6
  • kernel-bootwrapper< 0:2.6.32-754.30.2.el6
  • kernel-debug< 0:2.6.32-754.30.2.el6
  • kernel-debug-debuginfo< 0:2.6.32-754.30.2.el6
Ubuntu17 products
  • linux< 3.13.0-142.191 | < 4.4.0-98.121
  • linux-aws< 4.4.0-1039.48
  • linux-azure< 4.13.0-1005.7 | All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-gcp< 4.13.0-1002.5 | All versions (No fix recorded)
Debian1 product
  • linux< 4.13.4-2
Linux1 product

4 vendors · 41 products

References

24 links
Show all 24 references