CVE-2020-25285

Advisory lineage Upstream: 0 Downstream: 28
Modified
Published: 13 Sept 2020, 17:28
Last modified:04 Aug 2024, 15:33

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.4 MEDIUM
v3.1 (nvd)
EPSS Score
0.05% LOW
0% probability -0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Sept 2020, 17:28
Published
Vulnerability first disclosed
04 Aug 2024, 15:33
Last Modified
Vulnerability information updated

Description

A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.4CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.05%• Percentile: 15%

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.

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04 | 18.04 | 20.04

  • debian•debian_linux

    9.0

  • linux•linux_kernel

    < 5.8.8

References (9)