CVE-2024-56772 (GCVE-0-2024-56772)

Vulnerability from cvelistv5 – Published: 2025-01-08 17:49 – Updated: 2026-05-11 20:58
VLAI
Title
kunit: string-stream: Fix a UAF bug in kunit_init_suite()
Summary
In the Linux kernel, the following vulnerability has been resolved: kunit: string-stream: Fix a UAF bug in kunit_init_suite() In kunit_debugfs_create_suite(), if alloc_string_stream() fails in the kunit_suite_for_each_test_case() loop, the "suite->log = stream" has assigned before, and the error path only free the suite->log's stream memory but not set it to NULL, so the later string_stream_clear() of suite->log in kunit_init_suite() will cause below UAF bug. Set stream pointer to NULL after free to fix it. Unable to handle kernel paging request at virtual address 006440150000030d Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [006440150000030d] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [last unloaded: iio_test_gts] CPU: 5 UID: 0 PID: 6253 Comm: modprobe Tainted: G B W N 6.12.0-rc4+ #458 Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST Hardware name: linux,dummy-virt (DT) pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : string_stream_clear+0x54/0x1ac lr : string_stream_clear+0x1a8/0x1ac sp : ffffffc080b47410 x29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98 x26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003 x23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000 x20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 0000000000001840 x17: 0000000000000000 x16: 0000000000000000 x15: ffffffe45c355cb4 x14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75 x11: 1ffffff810168e74 x10: ffffffb810168e74 x9 : dfffffc000000000 x8 : 0000000000000004 x7 : 0000000000000003 x6 : 0000000000000001 x5 : ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000 Call trace: string_stream_clear+0x54/0x1ac __kunit_test_suites_init+0x108/0x1d8 kunit_exec_run_tests+0xb8/0x100 kunit_module_notify+0x400/0x55c notifier_call_chain+0xfc/0x3b4 blocking_notifier_call_chain+0x68/0x9c do_init_module+0x24c/0x5c8 load_module+0x4acc/0x4e90 init_module_from_file+0xd4/0x128 idempotent_init_module+0x2d4/0x57c __arm64_sys_finit_module+0xac/0x100 invoke_syscall+0x6c/0x258 el0_svc_common.constprop.0+0x160/0x22c do_el0_svc+0x44/0x5c el0_svc+0x48/0xb8 el0t_64_sync_handler+0x13c/0x158 el0t_64_sync+0x190/0x194 Code: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Oops: Fatal exception
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a3fdf784780ccb0008d630e8722d1389c49c7499 , < 3213b92754b94dec6836e8b4d6ec7d224a805b61 (git)
Affected: a3fdf784780ccb0008d630e8722d1389c49c7499 , < 39e21403c978862846fa68b7f6d06f9cca235194 (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.4 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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              "confidentialityImpact": "HIGH",
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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:H/I:H/A:H",
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkunit: string-stream: Fix a UAF bug in kunit_init_suite()\n\nIn kunit_debugfs_create_suite(), if alloc_string_stream() fails in the\nkunit_suite_for_each_test_case() loop, the \"suite-\u003elog = stream\"\nhas assigned before, and the error path only free the suite-\u003elog\u0027s stream\nmemory but not set it to NULL, so the later string_stream_clear() of\nsuite-\u003elog in kunit_init_suite() will cause below UAF bug.\n\nSet stream pointer to NULL after free to fix it.\n\n\tUnable to handle kernel paging request at virtual address 006440150000030d\n\tMem abort info:\n\t  ESR = 0x0000000096000004\n\t  EC = 0x25: DABT (current EL), IL = 32 bits\n\t  SET = 0, FnV = 0\n\t  EA = 0, S1PTW = 0\n\t  FSC = 0x04: level 0 translation fault\n\tData abort info:\n\t  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n\t  CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n\t  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n\t[006440150000030d] address between user and kernel address ranges\n\tInternal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n\tDumping ftrace buffer:\n\t   (ftrace buffer empty)\n\tModules linked in: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [last unloaded: iio_test_gts]\n\tCPU: 5 UID: 0 PID: 6253 Comm: modprobe Tainted: G    B   W        N 6.12.0-rc4+ #458\n\tTainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST\n\tHardware name: linux,dummy-virt (DT)\n\tpstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n\tpc : string_stream_clear+0x54/0x1ac\n\tlr : string_stream_clear+0x1a8/0x1ac\n\tsp : ffffffc080b47410\n\tx29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98\n\tx26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003\n\tx23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000\n\tx20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 0000000000001840\n\tx17: 0000000000000000 x16: 0000000000000000 x15: ffffffe45c355cb4\n\tx14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75\n\tx11: 1ffffff810168e74 x10: ffffffb810168e74 x9 : dfffffc000000000\n\tx8 : 0000000000000004 x7 : 0000000000000003 x6 : 0000000000000001\n\tx5 : ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000\n\tx2 : 0000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000\n\tCall trace:\n\t string_stream_clear+0x54/0x1ac\n\t __kunit_test_suites_init+0x108/0x1d8\n\t kunit_exec_run_tests+0xb8/0x100\n\t kunit_module_notify+0x400/0x55c\n\t notifier_call_chain+0xfc/0x3b4\n\t blocking_notifier_call_chain+0x68/0x9c\n\t do_init_module+0x24c/0x5c8\n\t load_module+0x4acc/0x4e90\n\t init_module_from_file+0xd4/0x128\n\t idempotent_init_module+0x2d4/0x57c\n\t __arm64_sys_finit_module+0xac/0x100\n\t invoke_syscall+0x6c/0x258\n\t el0_svc_common.constprop.0+0x160/0x22c\n\t do_el0_svc+0x44/0x5c\n\t el0_svc+0x48/0xb8\n\t el0t_64_sync_handler+0x13c/0x158\n\t el0t_64_sync+0x190/0x194\n\tCode: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80)\n\t---[ end trace 0000000000000000 ]---\n\tKernel panic - not syncing: Oops: Fatal exception"
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        "dateUpdated": "2026-05-11T20:58:46.489Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3213b92754b94dec6836e8b4d6ec7d224a805b61"
        },
        {
          "url": "https://git.kernel.org/stable/c/39e21403c978862846fa68b7f6d06f9cca235194"
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      ],
      "title": "kunit: string-stream: Fix a UAF bug in kunit_init_suite()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56772",
    "datePublished": "2025-01-08T17:49:11.544Z",
    "dateReserved": "2024-12-29T11:26:39.763Z",
    "dateUpdated": "2026-05-11T20:58:46.489Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-56772",
      "date": "2026-07-24",
      "epss": "0.00198",
      "percentile": "0.09813"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56772\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-08T18:15:17.897\",\"lastModified\":\"2026-06-17T08:12:57.340\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nkunit: string-stream: Fix a UAF bug in kunit_init_suite()\\n\\nIn kunit_debugfs_create_suite(), if alloc_string_stream() fails in the\\nkunit_suite_for_each_test_case() loop, the \\\"suite-\u003elog = stream\\\"\\nhas assigned before, and the error path only free the suite-\u003elog\u0027s stream\\nmemory but not set it to NULL, so the later string_stream_clear() of\\nsuite-\u003elog in kunit_init_suite() will cause below UAF bug.\\n\\nSet stream pointer to NULL after free to fix it.\\n\\n\\tUnable to handle kernel paging request at virtual address 006440150000030d\\n\\tMem abort info:\\n\\t  ESR = 0x0000000096000004\\n\\t  EC = 0x25: DABT (current EL), IL = 32 bits\\n\\t  SET = 0, FnV = 0\\n\\t  EA = 0, S1PTW = 0\\n\\t  FSC = 0x04: level 0 translation fault\\n\\tData abort info:\\n\\t  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\\n\\t  CM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n\\t  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n\\t[006440150000030d] address between user and kernel address ranges\\n\\tInternal error: Oops: 0000000096000004 [#1] PREEMPT SMP\\n\\tDumping ftrace buffer:\\n\\t   (ftrace buffer empty)\\n\\tModules linked in: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [last unloaded: iio_test_gts]\\n\\tCPU: 5 UID: 0 PID: 6253 Comm: modprobe Tainted: G    B   W        N 6.12.0-rc4+ #458\\n\\tTainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST\\n\\tHardware name: linux,dummy-virt (DT)\\n\\tpstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n\\tpc : string_stream_clear+0x54/0x1ac\\n\\tlr : string_stream_clear+0x1a8/0x1ac\\n\\tsp : ffffffc080b47410\\n\\tx29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98\\n\\tx26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003\\n\\tx23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000\\n\\tx20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 0000000000001840\\n\\tx17: 0000000000000000 x16: 0000000000000000 x15: ffffffe45c355cb4\\n\\tx14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75\\n\\tx11: 1ffffff810168e74 x10: ffffffb810168e74 x9 : dfffffc000000000\\n\\tx8 : 0000000000000004 x7 : 0000000000000003 x6 : 0000000000000001\\n\\tx5 : ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000\\n\\tx2 : 0000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000\\n\\tCall trace:\\n\\t string_stream_clear+0x54/0x1ac\\n\\t __kunit_test_suites_init+0x108/0x1d8\\n\\t kunit_exec_run_tests+0xb8/0x100\\n\\t kunit_module_notify+0x400/0x55c\\n\\t notifier_call_chain+0xfc/0x3b4\\n\\t blocking_notifier_call_chain+0x68/0x9c\\n\\t do_init_module+0x24c/0x5c8\\n\\t load_module+0x4acc/0x4e90\\n\\t init_module_from_file+0xd4/0x128\\n\\t idempotent_init_module+0x2d4/0x57c\\n\\t __arm64_sys_finit_module+0xac/0x100\\n\\t invoke_syscall+0x6c/0x258\\n\\t el0_svc_common.constprop.0+0x160/0x22c\\n\\t do_el0_svc+0x44/0x5c\\n\\t el0_svc+0x48/0xb8\\n\\t el0t_64_sync_handler+0x13c/0x158\\n\\t el0t_64_sync+0x190/0x194\\n\\tCode: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80)\\n\\t---[ end trace 0000000000000000 ]---\\n\\tKernel panic - not syncing: Oops: Fatal exception\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: kunit: string-stream: Corrige un error de UAF en kunit_init_suite() En kunit_debugfs_create_suite(), si alloc_string_stream() falla en el bucle kunit_suite_for_each_test_case(), \\\"suite-\u0026gt;log = stream\\\" se ha asignado antes, y la ruta de error solo libera la memoria de flujo de suite-\u0026gt;log pero no la establece en NULL, por lo que el posterior string_stream_clear() de suite-\u0026gt;log en kunit_init_suite() provocar\u00e1 el siguiente error de UAF. Establezca el puntero de flujo en NULL despu\u00e9s de liberarlo para solucionarlo. No se puede gestionar la solicitud de paginaci\u00f3n del n\u00facleo en la direcci\u00f3n virtual 006440150000030d Informaci\u00f3n de aborto de memoria: ESR = 0x0000000096000004 EC = 0x25: DABT (EL actual), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: error de traducci\u00f3n de nivel 0 Informaci\u00f3n de aborto de datos: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [006440150000030d] direcci\u00f3n entre los rangos de direcciones del usuario y del n\u00facleo Error interno: Oops: 0000000096000004 [#1] PREEMPT SMP Volcado de b\u00fafer ftrace: (b\u00fafer ftrace vac\u00edo) M\u00f3dulos vinculados en: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [\u00faltima descarga: iio_test_gts] CPU: 5 UID: 0 PID: 6253 Comm: modprobe Contaminado: GBWN 6.12.0-rc4+ #458 Contaminado: [B]=BAD_PAGE, [W]=WARN, [N]=TEST Nombre del hardware: linux,dummy-virt (DT) pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : string_stream_clear+0x54/0x1ac lr : cadena_flujo_limpio+0x1a8/0x1ac sp : ffffffc080b47410 x29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98 x26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003 x23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000 x20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 00000000000001840 x17: 0000000000000000 x16: 00000000000000000 x15: ffffffe45c355cb4 x14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75 x11: 1ffffff810168e74 x10: ffffffb810168e74 x9: dfffffc000000000 x8: 000000000000004 x7: 0000000000000003 x6: 0000000000000001 x5: ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 00000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000 Rastreo de llamadas: string_stream_clear+0x54/0x1ac __kunit_test_suites_init+0x108/0x1d8 kunit_exec_run_tests+0xb8/0x100 kunit_module_notify+0x400/0x55c cadena_de_llamadas_de_notificador+0xfc/0x3b4 cadena_de_llamadas_de_notificador_de_bloqueo+0x68/0x9c do_init_module+0x24c/0x5c8 m\u00f3dulo_carga+0x4acc/0x4e90 m\u00f3dulo_init_desde_archivo+0xd4/0x128 m\u00f3dulo_init_idempotente+0x2d4/0x57c m\u00f3dulo_finit_sys_arm64+0xac/0x100 llamada_al_sistema_invocada+0x6c/0x258 el0_svc_common.constprop.0+0x160/0x22c do_el0_svc+0x44/0x5c el0_svc+0x48/0xb8 controlador_sincronizaci\u00f3n_el0t_64+0x13c/0x158 el0t_64_sync+0x190/0x194 C\u00f3digo: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80) ---[ fin del seguimiento 0000000000000000 ]--- P\u00e1nico del kernel: no se sincroniza: Vaya: Excepci\u00f3n fatal\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"lib/kunit/debugfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a3fdf784780ccb0008d630e8722d1389c49c7499\",\"lessThan\":\"3213b92754b94dec6836e8b4d6ec7d224a805b61\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a3fdf784780ccb0008d630e8722d1389c49c7499\",\"lessThan\":\"39e21403c978862846fa68b7f6d06f9cca235194\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"lib/kunit/debugfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.4\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-02-10T17:12:12.420293Z\",\"id\":\"CVE-2024-56772\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.4\",\"matchCriteriaId\":\"04756810-D093-4B43-B1D9-CF5035968061\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3213b92754b94dec6836e8b4d6ec7d224a805b61\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/39e21403c978862846fa68b7f6d06f9cca235194\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T11:25:02+00:00",
      "cve": "CVE-2024-56772",
      "id": "CVE-2024-56772",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kunit: string-stream: Fix a UAF bug in kunit_init_suite()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56772.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56772\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-10T17:12:12.420293Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-10T17:12:14.439Z\"}}], \"cna\": {\"title\": \"kunit: string-stream: Fix a UAF bug in kunit_init_suite()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"a3fdf784780ccb0008d630e8722d1389c49c7499\", \"lessThan\": \"3213b92754b94dec6836e8b4d6ec7d224a805b61\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a3fdf784780ccb0008d630e8722d1389c49c7499\", \"lessThan\": \"39e21403c978862846fa68b7f6d06f9cca235194\", \"versionType\": \"git\"}], \"programFiles\": [\"lib/kunit/debugfs.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.12.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"lib/kunit/debugfs.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/3213b92754b94dec6836e8b4d6ec7d224a805b61\"}, {\"url\": \"https://git.kernel.org/stable/c/39e21403c978862846fa68b7f6d06f9cca235194\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nkunit: string-stream: Fix a UAF bug in kunit_init_suite()\\n\\nIn kunit_debugfs_create_suite(), if alloc_string_stream() fails in the\\nkunit_suite_for_each_test_case() loop, the \\\"suite-\u003elog = stream\\\"\\nhas assigned before, and the error path only free the suite-\u003elog\u0027s stream\\nmemory but not set it to NULL, so the later string_stream_clear() of\\nsuite-\u003elog in kunit_init_suite() will cause below UAF bug.\\n\\nSet stream pointer to NULL after free to fix it.\\n\\n\\tUnable to handle kernel paging request at virtual address 006440150000030d\\n\\tMem abort info:\\n\\t  ESR = 0x0000000096000004\\n\\t  EC = 0x25: DABT (current EL), IL = 32 bits\\n\\t  SET = 0, FnV = 0\\n\\t  EA = 0, S1PTW = 0\\n\\t  FSC = 0x04: level 0 translation fault\\n\\tData abort info:\\n\\t  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\\n\\t  CM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n\\t  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n\\t[006440150000030d] address between user and kernel address ranges\\n\\tInternal error: Oops: 0000000096000004 [#1] PREEMPT SMP\\n\\tDumping ftrace buffer:\\n\\t   (ftrace buffer empty)\\n\\tModules linked in: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [last unloaded: iio_test_gts]\\n\\tCPU: 5 UID: 0 PID: 6253 Comm: modprobe Tainted: G    B   W        N 6.12.0-rc4+ #458\\n\\tTainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST\\n\\tHardware name: linux,dummy-virt (DT)\\n\\tpstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n\\tpc : string_stream_clear+0x54/0x1ac\\n\\tlr : string_stream_clear+0x1a8/0x1ac\\n\\tsp : ffffffc080b47410\\n\\tx29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98\\n\\tx26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003\\n\\tx23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000\\n\\tx20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 0000000000001840\\n\\tx17: 0000000000000000 x16: 0000000000000000 x15: ffffffe45c355cb4\\n\\tx14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75\\n\\tx11: 1ffffff810168e74 x10: ffffffb810168e74 x9 : dfffffc000000000\\n\\tx8 : 0000000000000004 x7 : 0000000000000003 x6 : 0000000000000001\\n\\tx5 : ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000\\n\\tx2 : 0000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000\\n\\tCall trace:\\n\\t string_stream_clear+0x54/0x1ac\\n\\t __kunit_test_suites_init+0x108/0x1d8\\n\\t kunit_exec_run_tests+0xb8/0x100\\n\\t kunit_module_notify+0x400/0x55c\\n\\t notifier_call_chain+0xfc/0x3b4\\n\\t blocking_notifier_call_chain+0x68/0x9c\\n\\t do_init_module+0x24c/0x5c8\\n\\t load_module+0x4acc/0x4e90\\n\\t init_module_from_file+0xd4/0x128\\n\\t idempotent_init_module+0x2d4/0x57c\\n\\t __arm64_sys_finit_module+0xac/0x100\\n\\t invoke_syscall+0x6c/0x258\\n\\t el0_svc_common.constprop.0+0x160/0x22c\\n\\t do_el0_svc+0x44/0x5c\\n\\t el0_svc+0x48/0xb8\\n\\t el0t_64_sync_handler+0x13c/0x158\\n\\t el0t_64_sync+0x190/0x194\\n\\tCode: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80)\\n\\t---[ end trace 0000000000000000 ]---\\n\\tKernel panic - not syncing: Oops: Fatal exception\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-01-20T06:27:52.038Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56772\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-10T17:21:06.581Z\", \"dateReserved\": \"2024-12-29T11:26:39.763Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-01-08T17:49:11.544Z\", \"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.