cve-2024-50192
Vulnerability from cvelistv5
Published
2024-11-08 05:54
Modified
2024-12-19 09:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01282ab5182f85e42234df2ff42f0ce790f465ffPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1442ee0011983f0c5c4b92380e6853afb513841aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64b12b061c5488e2d69e67c4eaae5da64fd30bfePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/755b9532c885b8761fb135fedcd705e21e61cccbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7d7b7fc876f836f40bf48a87e07ea18756ba196Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d960505a869e66184fff97fb334980a5b797c7c6Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.6
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/irqchip/irq-gic-v3-its.c",
            "include/linux/irqchip/arm-gic-v4.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v4: Don\u0027t allow a VMOVP on a dying VPE\n\nKunkun Jiang reported that there is a small window of opportunity for\nuserspace to force a change of affinity for a VPE while the VPE has already\nbeen unmapped, but the corresponding doorbell interrupt still visible in\n/proc/irq/.\n\nPlug the race by checking the value of vmapp_count, which tracks whether\nthe VPE is mapped ot not, and returning an error in this case.\n\nThis involves making vmapp_count common to both GICv4.1 and its v4.0\nancestor."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:35:09.839Z",
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        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/1442ee0011983f0c5c4b92380e6853afb513841a"
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      ],
      "title": "irqchip/gic-v4: Don\u0027t allow a VMOVP on a dying VPE",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50192",
    "datePublished": "2024-11-08T05:54:07.535Z",
    "dateReserved": "2024-10-21T19:36:19.967Z",
    "dateUpdated": "2024-12-19T09:35:09.839Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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  }
}


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