CVE-2022-49395 (GCVE-0-2022-49395)
Vulnerability from cvelistv5
Published
2025-02-26 02:11
Modified
2025-05-04 08:36
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes. ================================================================== BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================
References
Impacted products
Vendor Product Version
Linux Linux Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
Version: 858259cf7d1c443c836a2022b78cb281f0a9b95e
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{
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\num: Fix out-of-bounds read in LDT setup\n\nsyscall_stub_data() expects the data_count parameter to be the number of\nlongs, not bytes.\n\n ==================================================================\n BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0\n Read of size 128 at addr 000000006411f6f0 by task swapper/1\n\n CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18\n Call Trace:\n  show_stack.cold+0x166/0x2a7\n  __dump_stack+0x3a/0x43\n  dump_stack_lvl+0x1f/0x27\n  print_report.cold+0xdb/0xf81\n  kasan_report+0x119/0x1f0\n  kasan_check_range+0x3a3/0x440\n  memcpy+0x52/0x140\n  syscall_stub_data+0x70/0xe0\n  write_ldt_entry+0xac/0x190\n  init_new_ldt+0x515/0x960\n  init_new_context+0x2c4/0x4d0\n  mm_init.constprop.0+0x5ed/0x760\n  mm_alloc+0x118/0x170\n  0x60033f48\n  do_one_initcall+0x1d7/0x860\n  0x60003e7b\n  kernel_init+0x6e/0x3d4\n  new_thread_handler+0x1e7/0x2c0\n\n The buggy address belongs to stack of task swapper/1\n  and is located at offset 64 in frame:\n  init_new_ldt+0x0/0x960\n\n This frame has 2 objects:\n  [32, 40) \u0027addr\u0027\n  [64, 80) \u0027desc\u0027\n =================================================================="
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        "dateUpdated": "2025-05-04T08:36:46.024Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568"
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      "title": "um: Fix out-of-bounds read in LDT setup",
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    "cveId": "CVE-2022-49395",
    "datePublished": "2025-02-26T02:11:25.676Z",
    "dateReserved": "2025-02-26T02:08:31.562Z",
    "dateUpdated": "2025-05-04T08:36:46.024Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49395\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:16.080\",\"lastModified\":\"2025-04-17T20:48:39.660\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\num: Fix out-of-bounds read in LDT setup\\n\\nsyscall_stub_data() expects the data_count parameter to be the number of\\nlongs, not bytes.\\n\\n ==================================================================\\n BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0\\n Read of size 128 at addr 000000006411f6f0 by task swapper/1\\n\\n CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18\\n Call Trace:\\n  show_stack.cold+0x166/0x2a7\\n  __dump_stack+0x3a/0x43\\n  dump_stack_lvl+0x1f/0x27\\n  print_report.cold+0xdb/0xf81\\n  kasan_report+0x119/0x1f0\\n  kasan_check_range+0x3a3/0x440\\n  memcpy+0x52/0x140\\n  syscall_stub_data+0x70/0xe0\\n  write_ldt_entry+0xac/0x190\\n  init_new_ldt+0x515/0x960\\n  init_new_context+0x2c4/0x4d0\\n  mm_init.constprop.0+0x5ed/0x760\\n  mm_alloc+0x118/0x170\\n  0x60033f48\\n  do_one_initcall+0x1d7/0x860\\n  0x60003e7b\\n  kernel_init+0x6e/0x3d4\\n  new_thread_handler+0x1e7/0x2c0\\n\\n The buggy address belongs to stack of task swapper/1\\n  and is located at offset 64 in frame:\\n  init_new_ldt+0x0/0x960\\n\\n This frame has 2 objects:\\n  [32, 40) \u0027addr\u0027\\n  [64, 80) \u0027desc\u0027\\n ==================================================================\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: um: Se corrige la lectura fuera de los l\u00edmites en la configuraci\u00f3n de LDT syscall_stub_data() espera que el par\u00e1metro data_count sea el n\u00famero de longs, no bytes. ===================================================================== ERROR: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) \u0027addr\u0027 [64, 80) \u0027desc\u0027 ==================================================================\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.15\",\"versionEndExcluding\":\"4.9.318\",\"matchCriteriaId\":\"0DED0F6A-FC03-4637-B95D-CCE9C053BD2B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.283\",\"matchCriteriaId\":\"D6823775-2653-4644-A0D4-4E6E68F10C65\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.247\",\"matchCriteriaId\":\"B8CFA0F4-2D75-41F4-9753-87944A08B53B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.198\",\"matchCriteriaId\":\"3EC49633-14DE-4EBD-BB80-76AE2E3EABB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.121\",\"matchCriteriaId\":\"34ACD872-E5BC-401C-93D5-B357A62426E0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.46\",\"matchCriteriaId\":\"20D41697-0E8B-4B7D-8842-F17BF2AA21E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.14\",\"matchCriteriaId\":\"15E2DD33-2255-4B76-9C15-04FF8CBAB252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"8E122216-2E9E-4B3E-B7B8-D575A45BA3C2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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