ghsa-2v3x-7c37-r5r2
Vulnerability from github
Published
2022-05-03 00:00
Modified
2022-05-17 00:00
Severity ?
Details
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.
{ "affected": [], "aliases": [ "CVE-2021-3750" ], "database_specific": { "cwe_ids": [ "CWE-416" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2022-05-02T19:15:00Z", "severity": "HIGH" }, "details": "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\u0027s 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.", "id": "GHSA-2v3x-7c37-r5r2", "modified": "2022-05-17T00:00:54Z", "published": "2022-05-03T00:00:39Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3750" }, { "type": "WEB", "url": "https://access.redhat.com/errata/RHSA-2022:7967" }, { "type": "WEB", "url": "https://access.redhat.com/security/cve/CVE-2021-3750" }, { "type": "WEB", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1999073" }, { "type": "WEB", "url": "https://gitlab.com/qemu-project/qemu/-/issues/541" }, { "type": "WEB", "url": "https://gitlab.com/qemu-project/qemu/-/issues/556" }, { "type": "WEB", "url": "https://security.gentoo.org/glsa/202208-27" }, { "type": "WEB", "url": "https://security.netapp.com/advisory/ntap-20220624-0003" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "type": "CVSS_V3" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.