{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)\n\nLack of check for copy-on-write (COW) mapping in drm_gem_shmem_mmap\nallows users to call mmap with PROT_WRITE and MAP_PRIVATE flag\ncausing a kernel panic due to BUG_ON in vmf_insert_pfn_prot:\nBUG_ON((vma->vm_flags & VM_PFNMAP) && is_cow_mapping(vma->vm_flags));\n\nReturn -EINVAL early if COW mapping is detected.\n\nThis bug affects all drm drivers using default shmem helpers.\nIt can be reproduced by this simple example:\nvoid *ptr = mmap(0, size, PROT_WRITE, MAP_PRIVATE, fd, mmap_offset);\nptr[0] = 0;"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/gpu/drm/drm_gem_shmem_helper.c"
               ],
               "versions": [
                  {
                     "version": "2194a63a818d",
                     "lessThan": "3ae63a8c1685",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2194a63a818d",
                     "lessThan": "2219e5f97244",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2194a63a818d",
                     "lessThan": "1b4a8b89bf67",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2194a63a818d",
                     "lessThan": "03c71c42809e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2194a63a818d",
                     "lessThan": "39bc27bd6880",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/gpu/drm/drm_gem_shmem_helper.c"
               ],
               "versions": [
                  {
                     "version": "5.2",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.2",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.169",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.114",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.35",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.6",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/3ae63a8c1685e16958560ec08d30defdc5b9cca0"
            },
            {
               "url": "https://git.kernel.org/stable/c/2219e5f97244b79c276751a1167615b9714db1b0"
            },
            {
               "url": "https://git.kernel.org/stable/c/1b4a8b89bf6787090b56424d269bf84ba00c3263"
            },
            {
               "url": "https://git.kernel.org/stable/c/03c71c42809ef4b17f5d874cdb2d3bf40e847b86"
            },
            {
               "url": "https://git.kernel.org/stable/c/39bc27bd688066a63e56f7f64ad34fae03fbe3b8"
            }
         ],
         "title": "drm/shmem-helper: Fix BUG_ON() on mmap(PROT_WRITE, MAP_PRIVATE)",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-39497",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}