cve-2024-26940
Vulnerability from cvelistv5
Published
2024-05-01 05:17
Modified
2024-11-05 09:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/016119154981d81c9e8f2ea3f56b9e2b4ea14500
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/042ef0afc40fa1a22b3608f22915b91ce39d128f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25e3ce59c1200f1f0563e39de151f34962ab0fe1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4be9075fec0a639384ed19975634b662bfab938f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb08db0fc5354fa17b7ed66dab3c503332423451
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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              "content": {
                "id": "CVE-2024-26940",
                "options": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed\n\nThe driver creates /sys/kernel/debug/dri/0/mob_ttm even when the\ncorresponding ttm_resource_manager is not allocated.\nThis leads to a crash when trying to read from this file.\n\nAdd a check to create mob_ttm, system_mob_ttm, and gmr_ttm debug file\nonly when the corresponding ttm_resource_manager is allocated.\n\ncrash\u003e bt\nPID: 3133409  TASK: ffff8fe4834a5000  CPU: 3    COMMAND: \"grep\"\n #0 [ffffb954506b3b20] machine_kexec at ffffffffb2a6bec3\n #1 [ffffb954506b3b78] __crash_kexec at ffffffffb2bb598a\n #2 [ffffb954506b3c38] crash_kexec at ffffffffb2bb68c1\n #3 [ffffb954506b3c50] oops_end at ffffffffb2a2a9b1\n #4 [ffffb954506b3c70] no_context at ffffffffb2a7e913\n #5 [ffffb954506b3cc8] __bad_area_nosemaphore at ffffffffb2a7ec8c\n #6 [ffffb954506b3d10] do_page_fault at ffffffffb2a7f887\n #7 [ffffb954506b3d40] page_fault at ffffffffb360116e\n    [exception RIP: ttm_resource_manager_debug+0x11]\n    RIP: ffffffffc04afd11  RSP: ffffb954506b3df0  RFLAGS: 00010246\n    RAX: ffff8fe41a6d1200  RBX: 0000000000000000  RCX: 0000000000000940\n    RDX: 0000000000000000  RSI: ffffffffc04b4338  RDI: 0000000000000000\n    RBP: ffffb954506b3e08   R8: ffff8fee3ffad000   R9: 0000000000000000\n    R10: ffff8fe41a76a000  R11: 0000000000000001  R12: 00000000ffffffff\n    R13: 0000000000000001  R14: ffff8fe5bb6f3900  R15: ffff8fe41a6d1200\n    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018\n #8 [ffffb954506b3e00] ttm_resource_manager_show at ffffffffc04afde7 [ttm]\n #9 [ffffb954506b3e30] seq_read at ffffffffb2d8f9f3\n    RIP: 00007f4c4eda8985  RSP: 00007ffdbba9e9f8  RFLAGS: 00000246\n    RAX: ffffffffffffffda  RBX: 000000000037e000  RCX: 00007f4c4eda8985\n    RDX: 000000000037e000  RSI: 00007f4c41573000  RDI: 0000000000000003\n    RBP: 000000000037e000   R8: 0000000000000000   R9: 000000000037fe30\n    R10: 0000000000000000  R11: 0000000000000246  R12: 00007f4c41573000\n    R13: 0000000000000003  R14: 00007f4c41572010  R15: 0000000000000003\n    ORIG_RAX: 0000000000000000  CS: 0033  SS: 002b"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26940",
    "datePublished": "2024-05-01T05:17:48.607Z",
    "dateReserved": "2024-02-19T14:20:24.197Z",
    "dateUpdated": "2024-11-05T09:18:34.822Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26940\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:09.343\",\"lastModified\":\"2024-11-04T19:35:06.833\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed\\n\\nThe driver creates /sys/kernel/debug/dri/0/mob_ttm even when the\\ncorresponding ttm_resource_manager is not allocated.\\nThis leads to a crash when trying to read from this file.\\n\\nAdd a check to create mob_ttm, system_mob_ttm, and gmr_ttm debug file\\nonly when the corresponding ttm_resource_manager is allocated.\\n\\ncrash\u003e bt\\nPID: 3133409  TASK: ffff8fe4834a5000  CPU: 3    COMMAND: \\\"grep\\\"\\n #0 [ffffb954506b3b20] machine_kexec at ffffffffb2a6bec3\\n #1 [ffffb954506b3b78] __crash_kexec at ffffffffb2bb598a\\n #2 [ffffb954506b3c38] crash_kexec at ffffffffb2bb68c1\\n #3 [ffffb954506b3c50] oops_end at ffffffffb2a2a9b1\\n #4 [ffffb954506b3c70] no_context at ffffffffb2a7e913\\n #5 [ffffb954506b3cc8] __bad_area_nosemaphore at ffffffffb2a7ec8c\\n #6 [ffffb954506b3d10] do_page_fault at ffffffffb2a7f887\\n #7 [ffffb954506b3d40] page_fault at ffffffffb360116e\\n    [exception RIP: ttm_resource_manager_debug+0x11]\\n    RIP: ffffffffc04afd11  RSP: ffffb954506b3df0  RFLAGS: 00010246\\n    RAX: ffff8fe41a6d1200  RBX: 0000000000000000  RCX: 0000000000000940\\n    RDX: 0000000000000000  RSI: ffffffffc04b4338  RDI: 0000000000000000\\n    RBP: ffffb954506b3e08   R8: ffff8fee3ffad000   R9: 0000000000000000\\n    R10: ffff8fe41a76a000  R11: 0000000000000001  R12: 00000000ffffffff\\n    R13: 0000000000000001  R14: ffff8fe5bb6f3900  R15: ffff8fe41a6d1200\\n    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018\\n #8 [ffffb954506b3e00] ttm_resource_manager_show at ffffffffc04afde7 [ttm]\\n #9 [ffffb954506b3e30] seq_read at ffffffffb2d8f9f3\\n    RIP: 00007f4c4eda8985  RSP: 00007ffdbba9e9f8  RFLAGS: 00000246\\n    RAX: ffffffffffffffda  RBX: 000000000037e000  RCX: 00007f4c4eda8985\\n    RDX: 000000000037e000  RSI: 00007f4c41573000  RDI: 0000000000000003\\n    RBP: 000000000037e000   R8: 0000000000000000   R9: 000000000037fe30\\n    R10: 0000000000000000  R11: 0000000000000246  R12: 00007f4c41573000\\n    R13: 0000000000000003  R14: 00007f4c41572010  R15: 0000000000000003\\n    ORIG_RAX: 0000000000000000  CS: 0033  SS: 002b\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/vmwgfx: cree la entrada debugfs ttm_resource_manager solo si es necesario. El controlador crea /sys/kernel/debug/dri/0/mob_ttm incluso cuando el ttm_resource_manager correspondiente no est\u00e1 asignado. Esto provoca un bloqueo al intentar leer este archivo. Agregue una marca para crear archivos de depuraci\u00f3n mob_ttm, system_mob_ttm y gmr_ttm solo cuando se asigne el ttm_resource_manager correspondiente. crash\u0026gt; bt PID: 3133409 TAREA: ffff8fe4834a5000 CPU: 3 COMANDO: \\\"grep\\\" #0 [ffffb954506b3b20] machine_kexec en ffffffffb2a6bec3 #1 [ffffb954506b3b78] __crash_kexec en ffffffffb2bb598a #2 ffb954506b3c38] crash_kexec en ffffffffb2bb68c1 #3 [ffffb954506b3c50] oops_end en ffffffffb2a2a9b1 # 4 [ffffb954506b3c70] no_context en ffffffffb2a7e913 #5 [ffffb954506b3cc8] __bad_area_nosemaphore en ffffffffb2a7ec8c #6 [ffffb954506b3d10] do_page_fault en ffffffffb2a7f887 #7 54506b3d40] page_fault en ffffffffb360116e [excepci\u00f3n RIP: ttm_resource_manager_debug+0x11] RIP: ffffffffc04afd11 RSP: ffffb954506b3df0 RFLAGS: 00010246 RAX: ffff8fe41a6d1200 RBX: 0000000000000000 RCX: 0000000000000940 RDX: 0000000000000000 RSI: ffffffffc04b4338 RDI: 0000000000000000 RBP: ffffb9545 06b3e08 R8: ffff8fee3ffad000 R9: 0000000000000000 R10: ffff8fe41a76a000 R11: 0000000000000001 R12: 00000000ffffffff R13: 0000000000000001 R14: ffff8fe5bb6f3900 R15: ffff8fe41a6d1200 ORIG_RAX: ffffffffffffff CS: 0010 SS : 0018 #8 [ffffb954506b3e00] ttm_resource_manager_show en ffffffffc04afde7 [ttm] #9 [ffffb954506b3e30] seq_read en ffffffffb2d8f9f3 RIP: 00007f4c4eda8985 RSP: RFLAGS: 00000246 RAX: ffffffffffffffda RBX: 000000000037e000 RCX: 00007f4c4eda8985 RDX: 000000000037e000 RSI: 00007f4c41573000 RDI: 00000000000000 03 PBR: 000000000037e000 R8: 0000000000000000 R9: 000000000037fe30 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4c41573000 R13: 0000000000000003 R14: 00007f4c41572010 R15: 0000000000000003 ORIG_RAX: 0000000000000000 CS: 0033 SS: 002b\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/016119154981d81c9e8f2ea3f56b9e2b4ea14500\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/042ef0afc40fa1a22b3608f22915b91ce39d128f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/25e3ce59c1200f1f0563e39de151f34962ab0fe1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4be9075fec0a639384ed19975634b662bfab938f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb08db0fc5354fa17b7ed66dab3c503332423451\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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