ghsa-ff8p-26v5-2cw5
Vulnerability from github
Published
2022-05-24 17:14
Modified
2022-05-24 17:14
Details
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of a bad error path in GNTTABOP_map_grant. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1 instead of a negative value. The grant table code in Linux treats this condition as success, and proceeds with incorrectly initialised state. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to map a grant, it hits the incorrect error path. This will crash a Linux based dom0 or backend domain.
{ "affected": [], "aliases": [ "CVE-2020-11743" ], "database_specific": { "cwe_ids": [], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2020-04-14T13:15:00Z", "severity": "LOW" }, "details": "An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of a bad error path in GNTTABOP_map_grant. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1 instead of a negative value. The grant table code in Linux treats this condition as success, and proceeds with incorrectly initialised state. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to map a grant, it hits the incorrect error path. This will crash a Linux based dom0 or backend domain.", "id": "GHSA-ff8p-26v5-2cw5", "modified": "2022-05-24T17:14:11Z", "published": "2022-05-24T17:14:11Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11743" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN" }, { "type": "WEB", "url": "https://security.gentoo.org/glsa/202005-08" }, { "type": "WEB", "url": "https://www.debian.org/security/2020/dsa-4723" }, { "type": "WEB", "url": "https://xenbits.xen.org/xsa/advisory-316.html" }, { "type": "WEB", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.html" }, { "type": "WEB", "url": "http://www.openwall.com/lists/oss-security/2020/04/14/3" }, { "type": "WEB", "url": "http://xenbits.xen.org/xsa/advisory-316.html" } ], "schema_version": "1.4.0", "severity": [] }
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.