CVE-2023-46838 (GCVE-0-2023-46838)
Vulnerability from cvelistv5
Published
2024-01-29 10:18
Modified
2025-02-13 17:14
Severity ?
Summary
Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.
References
security@xen.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List, Third Party Advisory
security@xen.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
security@xen.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGEKT4DKSDXDS34EL7M4UVJMMPH7Z3ZZ/Mailing List
security@xen.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/Mailing List
security@xen.orghttps://xenbits.xenproject.org/xsa/advisory-448.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGEKT4DKSDXDS34EL7M4UVJMMPH7Z3ZZ/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://xenbits.xenproject.org/xsa/advisory-448.htmlPatch, Third Party Advisory
Impacted products
Vendor Product Version
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               product: "Linux",
               vendor: "Linux",
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                  },
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            {
               lang: "en",
               value: "All systems using a Linux based network backend with kernel 4.14 and\nnewer are vulnerable.  Earlier versions may also be vulnerable.  Systems\nusing other network backends are not known to be vulnerable.",
            },
         ],
         credits: [
            {
               lang: "en",
               type: "finder",
               value: "This issue was discovered by Pratyush Yadav of Amazon.",
            },
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                     value: "An unprivileged guest can cause Denial of Service (DoS) of the host by\nsending network packets to the backend, causing the backend to crash.\n\nData corruption or privilege escalation have not been ruled out.",
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      datePublished: "2024-01-29T10:18:48.418Z",
      dateReserved: "2023-10-27T07:55:35.332Z",
      dateUpdated: "2025-02-13T17:14:36.514Z",
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         id: "CVE-2023-46838",
         lastModified: "2024-11-21T08:29:23.933",
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   },
}


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