{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndo_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak\n\nsyzbot identified a kernel information leak vulnerability in\ndo_sys_name_to_handle() and issued the following report [1].\n\n[1]\n\"BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\nBUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40\n instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n _copy_to_user+0xbc/0x100 lib/usercopy.c:40\n copy_to_user include/linux/uaccess.h:191 [inline]\n do_sys_name_to_handle fs/fhandle.c:73 [inline]\n __do_sys_name_to_handle_at fs/fhandle.c:112 [inline]\n __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94\n __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94\n ...\n\nUninit was created at:\n slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768\n slab_alloc_node mm/slub.c:3478 [inline]\n __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517\n __do_kmalloc_node mm/slab_common.c:1006 [inline]\n __kmalloc+0x121/0x3c0 mm/slab_common.c:1020\n kmalloc include/linux/slab.h:604 [inline]\n do_sys_name_to_handle fs/fhandle.c:39 [inline]\n __do_sys_name_to_handle_at fs/fhandle.c:112 [inline]\n __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94\n __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94\n ...\n\nBytes 18-19 of 20 are uninitialized\nMemory access of size 20 starts at ffff888128a46380\nData copied to user address 0000000020000240\"\n\nPer Chuck Lever's suggestion, use kzalloc() instead of kmalloc() to\nsolve the problem."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/fhandle.c"
               ],
               "versions": [
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "4bac28f441e3",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "772a7def9868",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "cde76b3af247",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "423b6bdf19bb",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "e6450d5e46a7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "c1362eae861d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "cba138f1ef37",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "bf9ec1b24ab4",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "990d6c2d7aee",
                     "lessThan": "3948abaa4e2b",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/fhandle.c"
               ],
               "versions": [
                  {
                     "version": "2.6.39",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.39",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.311",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.273",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.214",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.153",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.83",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.23",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.11",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.2",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1"
            },
            {
               "url": "https://git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b"
            },
            {
               "url": "https://git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126"
            },
            {
               "url": "https://git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71"
            },
            {
               "url": "https://git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6"
            },
            {
               "url": "https://git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b"
            },
            {
               "url": "https://git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312dedc7cf730"
            },
            {
               "url": "https://git.kernel.org/stable/c/bf9ec1b24ab4e94345aa1c60811dd329f069c38b"
            },
            {
               "url": "https://git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43"
            }
         ],
         "title": "do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26901",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}