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Gentoo Linux: CVE-2021-3929: QEMU: Multiple Vulnerabilities

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Gentoo Linux: CVE-2021-3929: QEMU: Multiple Vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
08/14/2022
Created
08/29/2022
Added
08/16/2022
Modified
09/02/2022

Description

A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading 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, executing arbitrary code within the context of the QEMU process on the host.

Solution(s)

  • gentoo-linux-upgrade-app-emulation-qemu

References

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