{
   containers: {
      cna: {
         affected: [
            {
               defaultStatus: "unaffected",
               product: "Linux",
               programFiles: [
                  "drivers/gpu/drm/panthor/panthor_device.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     lessThan: "2604afd65043e8f9d4be036cb1242adf6b5723cf",
                     status: "affected",
                     version: "5fe909cae118a757a77afb37174b99436a36d2e2",
                     versionType: "git",
                  },
                  {
                     lessThan: "f432a1621f049bb207e78363d9d0e3c6fa2da5db",
                     status: "affected",
                     version: "5fe909cae118a757a77afb37174b99436a36d2e2",
                     versionType: "git",
                  },
               ],
            },
            {
               defaultStatus: "affected",
               product: "Linux",
               programFiles: [
                  "drivers/gpu/drm/panthor/panthor_device.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     status: "affected",
                     version: "6.10",
                  },
                  {
                     lessThan: "6.10",
                     status: "unaffected",
                     version: "0",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "6.11.*",
                     status: "unaffected",
                     version: "6.11.8",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "*",
                     status: "unaffected",
                     version: "6.12",
                     versionType: "original_commit_for_fix",
                  },
               ],
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Be stricter about IO mapping flags\n\nThe current panthor_device_mmap_io() implementation has two issues:\n\n1. For mapping DRM_PANTHOR_USER_FLUSH_ID_MMIO_OFFSET,\n   panthor_device_mmap_io() bails if VM_WRITE is set, but does not clear\n   VM_MAYWRITE. That means userspace can use mprotect() to make the mapping\n   writable later on. This is a classic Linux driver gotcha.\n   I don't think this actually has any impact in practice:\n   When the GPU is powered, writes to the FLUSH_ID seem to be ignored; and\n   when the GPU is not powered, the dummy_latest_flush page provided by the\n   driver is deliberately designed to not do any flushes, so the only thing\n   writing to the dummy_latest_flush could achieve would be to make *more*\n   flushes happen.\n\n2. panthor_device_mmap_io() does not block MAP_PRIVATE mappings (which are\n   mappings without the VM_SHARED flag).\n   MAP_PRIVATE in combination with VM_MAYWRITE indicates that the VMA has\n   copy-on-write semantics, which for VM_PFNMAP are semi-supported but\n   fairly cursed.\n   In particular, in such a mapping, the driver can only install PTEs\n   during mmap() by calling remap_pfn_range() (because remap_pfn_range()\n   wants to **store the physical address of the mapped physical memory into\n   the vm_pgoff of the VMA**); installing PTEs later on with a fault\n   handler (as panthor does) is not supported in private mappings, and so\n   if you try to fault in such a mapping, vmf_insert_pfn_prot() splats when\n   it hits a BUG() check.\n\nFix it by clearing the VM_MAYWRITE flag (userspace writing to the FLUSH_ID\ndoesn't make sense) and requiring VM_SHARED (copy-on-write semantics for\nthe FLUSH_ID don't make sense).\n\nReproducers for both scenarios are in the notes of my patch on the mailing\nlist; I tested that these bugs exist on a Rock 5B machine.\n\nNote that I only compile-tested the patch, I haven't tested it; I don't\nhave a working kernel build setup for the test machine yet. Please test it\nbefore applying it.",
            },
         ],
         providerMetadata: {
            dateUpdated: "2024-12-19T09:38:26.990Z",
            orgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            shortName: "Linux",
         },
         references: [
            {
               url: "https://git.kernel.org/stable/c/2604afd65043e8f9d4be036cb1242adf6b5723cf",
            },
            {
               url: "https://git.kernel.org/stable/c/f432a1621f049bb207e78363d9d0e3c6fa2da5db",
            },
         ],
         title: "drm/panthor: Be stricter about IO mapping flags",
         x_generator: {
            engine: "bippy-5f407fcff5a0",
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      assignerShortName: "Linux",
      cveId: "CVE-2024-53071",
      datePublished: "2024-11-19T17:22:38.327Z",
      dateReserved: "2024-11-19T17:17:24.976Z",
      dateUpdated: "2024-12-19T09:38:26.990Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
}