fkie_cve-2024-27043
Vulnerability from fkie_nvd
Published
2024-05-01 13:15
Modified
2024-12-23 19:13
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "32929A32-A706-43C6-AE11-688AAC723E0E",
                     versionEndExcluding: "4.19.311",
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                     vulnerable: true,
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                     vulnerable: true,
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               negate: false,
               operator: "OR",
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: edia: dvbdev: fix a use-after-free\n\nIn dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed\nin several error-handling paths. However, *pdvbdev is not set to NULL\nafter dvbdev's deallocation, causing use-after-frees in many places,\nfor example, in the following call chain:\n\nbudget_register\n  |-> dvb_dmxdev_init\n        |-> dvb_register_device\n  |-> dvb_dmxdev_release\n        |-> dvb_unregister_device\n              |-> dvb_remove_device\n                    |-> dvb_device_put\n                          |-> kref_put\n\nWhen calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in\ndvb_register_device) could point to memory that had been freed in\ndvb_register_device. Thereafter, this pointer is transferred to\nkref_put and triggering a use-after-free.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: medios: edia: dvbdev: corregir un use-after-free En dvb_register_device, *pdvbdev se establece igual a dvbdev, que se libera en varias rutas de manejo de errores. Sin embargo, *pdvbdev no se establece en NULL después de la desasignación de dvbdev, lo que provoca use-after-free en muchos lugares, por ejemplo, en la siguiente cadena de llamadas: Budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device | -> dvb_remove_device |-> dvb_device_put |-> kref_put Al llamar a dvb_unregister_device, dmxdev->dvbdev (es decir, *pdvbdev en dvb_register_device) podría apuntar a la memoria que se había liberado en dvb_register_device. A partir de entonces, este puntero se transfiere a kref_put y se activa un use-after-free.",
      },
   ],
   id: "CVE-2024-27043",
   lastModified: "2024-12-23T19:13:31.163",
   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",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 5.9,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-05-01T13:15:49.740",
   references: [
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         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
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   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-416",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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