cve-2021-3750
Vulnerability from cvelistv5
Published
2022-05-02 18:48
Modified
2024-08-03 17:09
Severity ?
Summary
A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1999073Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://gitlab.com/qemu-project/qemu/-/issues/541Exploit, Third Party Advisory
secalert@redhat.comhttps://gitlab.com/qemu-project/qemu/-/issues/556Third Party Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202208-27Third Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20220624-0003/Third Party Advisory
Impacted products
n/aQEMU
Show details on NVD website

To clipboard 

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