{"id":"CVE-2024-50227","state":"PUBLISHED","title":"thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()","description":"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.","publishedAt":"2024-11-09T10:14:37.905Z","updatedAt":"2026-05-11T20:47:51.687Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ff6ab055e070d819f51196622e08f8941b6d2a4b","status":"affected","lessThan":"08b2771e9270fbe1ed4fbbe93abe05ac7fe9861d","versionType":"git"},{"version":"ff6ab055e070d819f51196622e08f8941b6d2a4b","status":"affected","lessThan":"e9e1b20fae7de06ba36dd3f8dba858157bad233d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/retimer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.11.7","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/retimer.c"]}],"references":["https://git.kernel.org/stable/c/08b2771e9270fbe1ed4fbbe93abe05ac7fe9861d","https://git.kernel.org/stable/c/e9e1b20fae7de06ba36dd3f8dba858157bad233d"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:07:56.516Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/50xxx/CVE-2024-50227.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-50227","state":"PUBLISHED","datePublished":"2024-11-09T10:14:37.905Z","dateUpdated":"2026-05-11T20:47:51.687Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-10-21T19:36:19.973Z"},"containers":{"cna":{"title":"thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ff6ab055e070d819f51196622e08f8941b6d2a4b","status":"affected","lessThan":"08b2771e9270fbe1ed4fbbe93abe05ac7fe9861d","versionType":"git"},{"version":"ff6ab055e070d819f51196622e08f8941b6d2a4b","status":"affected","lessThan":"e9e1b20fae7de06ba36dd3f8dba858157bad233d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/retimer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.11.7","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/thunderbolt/retimer.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/08b2771e9270fbe1ed4fbbe93abe05ac7fe9861d"},{"url":"https://git.kernel.org/stable/c/e9e1b20fae7de06ba36dd3f8dba858157bad233d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:47:51.687Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.1,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2024-50227","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T20:16:51.510217Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","type":"CWE","description":"CWE-125 Out-of-bounds Read"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T20:17:28.049Z"}}]}}}