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CVE-2024-26940 (GCVE-0-2024-26940)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:17 – Updated: 2026-05-11 20:07
VLAI
Title
drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed The driver creates /sys/kernel/debug/dri/0/mob_ttm even when the corresponding ttm_resource_manager is not allocated. This leads to a crash when trying to read from this file. Add a check to create mob_ttm, system_mob_ttm, and gmr_ttm debug file only when the corresponding ttm_resource_manager is allocated. crash> bt PID: 3133409 TASK: ffff8fe4834a5000 CPU: 3 COMMAND: "grep" #0 [ffffb954506b3b20] machine_kexec at ffffffffb2a6bec3 #1 [ffffb954506b3b78] __crash_kexec at ffffffffb2bb598a #2 [ffffb954506b3c38] crash_kexec at ffffffffb2bb68c1 #3 [ffffb954506b3c50] oops_end at ffffffffb2a2a9b1 #4 [ffffb954506b3c70] no_context at ffffffffb2a7e913 #5 [ffffb954506b3cc8] __bad_area_nosemaphore at ffffffffb2a7ec8c #6 [ffffb954506b3d10] do_page_fault at ffffffffb2a7f887 #7 [ffffb954506b3d40] page_fault at ffffffffb360116e [exception 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: ffffb954506b3e08 R8: ffff8fee3ffad000 R9: 0000000000000000 R10: ffff8fe41a76a000 R11: 0000000000000001 R12: 00000000ffffffff R13: 0000000000000001 R14: ffff8fe5bb6f3900 R15: ffff8fe41a6d1200 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #8 [ffffb954506b3e00] ttm_resource_manager_show at ffffffffc04afde7 [ttm] #9 [ffffb954506b3e30] seq_read at ffffffffb2d8f9f3 RIP: 00007f4c4eda8985 RSP: 00007ffdbba9e9f8 RFLAGS: 00000246 RAX: ffffffffffffffda RBX: 000000000037e000 RCX: 00007f4c4eda8985 RDX: 000000000037e000 RSI: 00007f4c41573000 RDI: 0000000000000003 RBP: 000000000037e000 R8: 0000000000000000 R9: 000000000037fe30 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4c41573000 R13: 0000000000000003 R14: 00007f4c41572010 R15: 0000000000000003 ORIG_RAX: 0000000000000000 CS: 0033 SS: 002b
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-06 18:58 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6 , < 016119154981d81c9e8f2ea3f56b9e2b4ea14500 (git)
Affected: af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6 , < 042ef0afc40fa1a22b3608f22915b91ce39d128f (git)
Affected: af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6 , < 25e3ce59c1200f1f0563e39de151f34962ab0fe1 (git)
Affected: af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6 , < eb08db0fc5354fa17b7ed66dab3c503332423451 (git)
Affected: af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6 , < 4be9075fec0a639384ed19975634b662bfab938f (git)
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Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.84 , ≤ 6.1.* (semver)
Unaffected: 6.6.24 , ≤ 6.6.* (semver)
Unaffected: 6.7.12 , ≤ 6.7.* (semver)
Unaffected: 6.8.3 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "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\"}]",
      "id": "CVE-2024-26940",
      "lastModified": "2024-11-21T09:03:26.170",
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      "published": "2024-05-01T06:15:09.343",
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    "microsoft_vex": {
      "current_release_date": "2024-11-05T00:00:00.000Z",
      "cve": "CVE-2024-26940",
      "id": "msrc_CVE-2024-26940",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26940.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26940\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:09.343\",\"lastModified\":\"2026-06-17T07:18:44.697\",\"vulnStatus\":\"Analyzed\",\"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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpu/drm/vmwgfx/vmwgfx_drv.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6\",\"lessThan\":\"016119154981d81c9e8f2ea3f56b9e2b4ea14500\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6\",\"lessThan\":\"042ef0afc40fa1a22b3608f22915b91ce39d128f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6\",\"lessThan\":\"25e3ce59c1200f1f0563e39de151f34962ab0fe1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6\",\"lessThan\":\"eb08db0fc5354fa17b7ed66dab3c503332423451\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"af4a25bbe5e7e60ff696ef5c1ec48ab2d51c17c6\",\"lessThan\":\"4be9075fec0a639384ed19975634b662bfab938f\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpu/drm/vmwgfx/vmwgfx_drv.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.84\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.24\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.12\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.3\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-06T18:58:47.194142Z\",\"id\":\"CVE-2024-26940\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
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      "current_release_date": "2026-06-28T06:58:41+00:00",
      "cve": "CVE-2024-26940",
      "id": "CVE-2024-26940",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/vmwgfx: Create debugfs ttm_resource_manager entry only if needed",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26940.json",
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      "source": "SUSE CSAF VEX",
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      "title": "SUSE CVE CVE-2024-26940",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26940.json",
      "version": "99"
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\"git\"}], \"programFiles\": [\"drivers/gpu/drm/vmwgfx/vmwgfx_drv.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.84\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/vmwgfx/vmwgfx_drv.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/016119154981d81c9e8f2ea3f56b9e2b4ea14500\"}, {\"url\": \"https://git.kernel.org/stable/c/042ef0afc40fa1a22b3608f22915b91ce39d128f\"}, {\"url\": \"https://git.kernel.org/stable/c/25e3ce59c1200f1f0563e39de151f34962ab0fe1\"}, {\"url\": \"https://git.kernel.org/stable/c/eb08db0fc5354fa17b7ed66dab3c503332423451\"}, {\"url\": \"https://git.kernel.org/stable/c/4be9075fec0a639384ed19975634b662bfab938f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.84\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.3\", \"versionStartIncluding\": \"5.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"5.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:00:15.819Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26940\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:00:15.819Z\", \"dateReserved\": \"2024-02-19T14:20:24.197Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:17:48.607Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.