CVE-2015-8839

Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 02 May 2016, 10:00
Last modified:06 Aug 2024, 08:29

Vulnerability Summary

Overall Risk (default)
low
20/100
CVSS Score
5.1 MEDIUM
v3.1 (nvd)
EPSS Score
0.04% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 May 2016, 10:00
Published
Vulnerability first disclosed
06 Aug 2024, 08:29
Last Modified
Vulnerability information updated

Description

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.1CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•LOW•Score: 1.9AV:L/AC:M/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.04%• Percentile: 13%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04

  • linux•linux_kernel

    ≤ 4.4.221 | 4.5:rc1 | 4.5:rc2 | 4.5:rc3 | 4.5:rc4 | 4.5:rc5 | 4.5:rc6 | 4.5:rc7

References (14)