CVE-2020-15859

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 21 Jul 2020, 15:25
Last modified:04 Aug 2024, 13:30

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
3.3 LOW
v3.1 (nvd)
EPSS Score
0.13% LOW
0% probability +0.10%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

21 Jul 2020, 15:25
Published
Vulnerability first disclosed
04 Aug 2024, 13:30
Last Modified
Vulnerability information updated

Description

QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.

CVSS Metrics

  • v3.1•LOW•Score: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.13%• Percentile: 32%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    9.0 | 10.0

  • qemu•qemu

    4.2.0

References (6)