cve/published/2024/CVE-2024-50227.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()\n\nKASAN reported following issue:\n\n BUG: KASAN: stack-out-of-bounds in tb_retimer_scan+0xffe/0x1550 [thunderbolt]\n Read of size 4 at addr ffff88810111fc1c by task kworker/u56:0/11\n CPU: 0 UID: 0 PID: 11 Comm: kworker/u56:0 Tainted: G     U             6.11.0+ #1387\n Tainted: [U]=USER\n Workqueue: thunderbolt0 tb_handle_hotplug [thunderbolt]\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0x6c/0x90\n  print_report+0xd1/0x630\n  kasan_report+0xdb/0x110\n  __asan_report_load4_noabort+0x14/0x20\n  tb_retimer_scan+0xffe/0x1550 [thunderbolt]\n  tb_scan_port+0xa6f/0x2060 [thunderbolt]\n  tb_handle_hotplug+0x17b1/0x3080 [thunderbolt]\n  process_one_work+0x626/0x1100\n  worker_thread+0x6c8/0xfa0\n  kthread+0x2c8/0x3a0\n  ret_from_fork+0x3a/0x80\n  ret_from_fork_asm+0x1a/0x30\n\nThis happens because the loop variable still gets incremented by one so\nmax becomes 3 instead of 2, and this makes the second loop read past the\nthe array declared on the stack.\n\nFix this by assigning to max directly in the loop body."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/thunderbolt/retimer.c"
               ],
               "versions": [
                  {
                     "version": "ff6ab055e070d819f51196622e08f8941b6d2a4b",
                     "lessThan": "08b2771e9270fbe1ed4fbbe93abe05ac7fe9861d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "ff6ab055e070d819f51196622e08f8941b6d2a4b",
                     "lessThan": "e9e1b20fae7de06ba36dd3f8dba858157bad233d",
                     "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/thunderbolt/retimer.c"
               ],
               "versions": [
                  {
                     "version": "6.11",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.11",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.11.7",
                     "lessThanOrEqual": "6.11.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.12",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.11",
                           "versionEndExcluding": "6.11.7"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.11",
                           "versionEndExcluding": "6.12"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/08b2771e9270fbe1ed4fbbe93abe05ac7fe9861d"
            },
            {
               "url": "https://git.kernel.org/stable/c/e9e1b20fae7de06ba36dd3f8dba858157bad233d"
            }
         ],
         "title": "thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-50227",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}