7.1

CVE-2018-1092: linux linux_kernel NULL Pointer Dereference

Modified
AliasesUBUNTU-CVE-2018-1092DEBIAN-CVE-2018-1092
Published 02-04-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-1092 is a high (CVSS 7.1) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 1.85% chance of exploitation in the next 30 days, higher than 79.2% 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
7.1/10
010
High · v2.0 (NVD)
EPSS score
1.85%
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 23 · Related 14
DLA-1369-1DSA-4187-1DSA-4188-1MGASA-2018-0249MGASA-2018-0264MGASA-2018-0265

Timeline

  1. 02-04-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.85%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.85% 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, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu22 products
  • linux< 3.13.0-157.207 | < 4.4.0-128.154 | < 4.15.0-23.25
  • linux-aws< 4.4.0-1023.23 | < 4.4.0-1061.70 | < 4.15.0-1010.10
  • linux-azure< 4.15.0-1013.13~16.04.2 | < 4.15.0-1013.13
  • linux-azure-6.11All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
Debian1 product
  • linux< 4.15.17-1
Linux1 product

3 vendors · 24 products

References

32 links
Show all 32 references