fkie_cve-2023-0240
Vulnerability from fkie_nvd
Published
2023-01-30 14:15
Modified
2024-11-21 07:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.
References
cve-coordination@google.comhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93Mailing List, Patch, Vendor Advisory
cve-coordination@google.comhttps://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49Patch, Third Party Advisory
cve-coordination@google.comhttps://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20230316-0001/
Impacted products
Vendor Product Version
linux linux_kernel *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "D61CA62B-157A-4415-B8FD-7C3C1208315D",
                     versionEndExcluding: "5.10",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation.\n\nIn the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.",
      },
      {
         lang: "es",
         value: "Hay un error lógico en la implementación de io_uring que puede usarse para desencadenar una vulnerabilidad use-after-free que conduce a una escalada de privilegios. En la función io_prep_async_work, la suposición de que la última llamada a io_grab_identity no puede devolver falso no es cierta y, en este caso, la función utilizará la identidad init_cred o las solicitudes vinculadas anteriores para realizar operaciones en lugar de utilizar la identidad actual. Esto puede provocar problemas de recuento de referencias que provoquen Use-After-Free. Recomendamos actualizar a la versión anterior 5.10.161.",
      },
   ],
   id: "CVE-2023-0240",
   lastModified: "2024-11-21T07:36:48.030",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 7.8,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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            exploitabilityScore: 1.8,
            impactScore: 5.9,
            source: "cve-coordination@google.com",
            type: "Secondary",
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         {
            cvssData: {
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               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 7.8,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 5.9,
            source: "nvd@nist.gov",
            type: "Primary",
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   },
   published: "2023-01-30T14:15:10.403",
   references: [
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         source: "cve-coordination@google.com",
         tags: [
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            "Patch",
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         url: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93",
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         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://security.netapp.com/advisory/ntap-20230316-0001/",
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   ],
   sourceIdentifier: "cve-coordination@google.com",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
         ],
         source: "cve-coordination@google.com",
         type: "Secondary",
      },
      {
         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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