Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2020-25084

Use After Free

Published: Sep 25, 2020 | Modified: Nov 21, 2024
CVSS 3.x
3.2
LOW
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
3.2 LOW
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-25084
CWEhttps://cwe.mitre.org/data/definitions/416.html

QEMU 5.0.0 has a use-after-free in hw/usb/hcd-xhci.c because the usb_packet_map return value is not checked.

Weakness

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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 Software

NameVendorStart VersionEnd Version
QemuQemu5.0.0 (including)5.0.0 (including)
QemuUbuntubionic*
QemuUbuntudevel*
QemuUbuntuesm-infra-legacy/trusty*
QemuUbuntuesm-infra/bionic*
QemuUbuntuesm-infra/focal*
QemuUbuntuesm-infra/xenial*
QemuUbuntufocal*
QemuUbuntugroovy*
QemuUbuntuhirsute*
QemuUbuntuimpish*
QemuUbuntujammy*
QemuUbuntukinetic*
QemuUbuntulunar*
QemuUbuntumantic*
QemuUbuntunoble*
QemuUbuntuoracular*
QemuUbuntuplucky*
QemuUbuntuquesting*
QemuUbuntutrusty*
QemuUbuntutrusty/esm*
QemuUbuntuupstream*
QemuUbuntuxenial*
Qemu-kvmUbuntuprecise/esm*

Potential Mitigations

References

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