7.2

CVE-2018-10840: canonical ubuntu_linux Heap-based Buffer Overflow

Modified
AliasesRHSA-2019:0162UBUNTU-CVE-2018-10840DEBIAN-CVE-2018-10840
Published 16-07-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-10840 is a high (CVSS 7.2) Heap-based Buffer Overflow vulnerability in canonical ubuntu_linux. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 52% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5.2, physical access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.2/10
010
High · v2.0 (NVD)
EPSS score
0.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 6 · Related 4
MGASA-2018-0324MGASA-2018-0340MGASA-2018-0341USN-3752-1USN-3752-2USN-3752-3

Timeline

  1. 16-07-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Linux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploit this by operating on a mounted crafted ext4 image.

CVSS metrics

9 scores · 6 sources · 3 versions

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.67% 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

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.redhat.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: physical access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard82 products
  • hyperv-daemons-6.18All versions (No fix recorded)
  • hyperv-daemons-genericAll versions (No fix recorded)
  • linux-aws-6.12< 6.12.65-r0 | All versions (No fix recorded)
  • linux-aws-6.12-boot-installedAll versions (No fix recorded)
  • linux-aws-6.12-fips-boot-installedAll versions (No fix recorded)
Redhat21 products
  • enterprise_linuxEOL7.0
  • kernel< 0:4.14.0-115.5.1.el7a
  • kernel-abi-whitelists< 0:4.14.0-115.5.1.el7a
  • kernel-alt< 0:4.14.0-115.5.1.el7a
  • kernel-bootwrapper< 0:4.14.0-115.5.1.el7a
Ubuntu8 products
  • linux< 4.15.0-33.36
  • linux-aws< 4.15.0-1020.20
  • linux-azure< 4.15.0-1022.22~16.04.1 | < 4.15.0-1022.23
  • linux-gcp< 4.15.0-1018.19~16.04.2 | < 4.15.0-1018.19
  • linux-hwe< 4.15.0-33.36~16.04.1
Canonical1 product
Debian1 product
  • linux< 4.17.3-1
Kernel1 product
Linux1 product

7 vendors · 115 products

References

18 links
Show all 18 references