CVE-2026-64599
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: amlogic - avoid double cleanup in meson_crypto_probe() When meson_allocate_chanlist() fails after a partial allocation, it already unwinds the allocated chanlist state through its local error path. meson_crypto_probe() then jump to error_flow and calls meson_free_chanlist() again, causing the same per-flow resources to be torn down twice. In the reproduced failure path, the second teardown re-entered crypto_engine_exit() on an already destroyed worker and KASAN reported a slab-use-after-free in kthread_destroy_worker(). Prevent double-free by handling partial allocation failures locally within meson_allocate_chanlist() and skipping the outer cleanup path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. The bug was reproduced in a QEMU x86_64 guest booted with KASAN on v7.1, using the reproducer under tools/testing/meson_crypto_probe. The reproducer forces the second dma_alloc_attrs() call in the gxl-crypto probe path to return NULL, making meson_allocate_chanlist() fail after partial initialization. On the unpatched kernel this reliably triggered a slab-use-after-free. With this fix applied, the same reproducer no longer emits any KASAN report and the probe fails cleanly with -ENOMEM. ================================================================== BUG: KASAN: slab-use-after-free in kthread_destroy_worker+0xb2/0xd0 Read of size 8 at addr ff1100010c057a68 by task insmod/265 CPU: 1 UID: 0 PID: 265 Comm: insmod Tainted: G O 7.1.0-rc2-00376-g810af9adc907-dirty #10 PREEMPT(lazy) Tainted: [O]=OOT_MODULE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x68/0xa0 print_report+0xcb/0x5e0 ? __virt_addr_valid+0x21d/0x3f0 ? kthread_destroy_worker+0xb2/0xd0 ? kthread_destroy_worker+0xb2/0xd0 kasan_report+0xca/0x100 ? kthread_destroy_worker+0xb2/0xd0 kthread_destroy_worker+0xb2/0xd0 meson_crypto_probe+0x4d0/0xc10 [amlogic_gxl_crypto] platform_probe+0x99/0x140 really_probe+0x1c6/0x6a0 ? __pfx___device_attach_driver+0x10/0x10 __driver_probe_device+0x248/0x310 ? acpi_driver_match_device+0xb0/0x100 driver_probe_device+0x48/0x210 ? __pfx___device_attach_driver+0x10/0x10 __device_attach_driver+0x160/0x320 bus_for_each_drv+0x104/0x190 ? __pfx_bus_for_each_drv+0x10/0x10 ? _raw_spin_unlock_irqrestore+0x2c/0x50 __device_attach+0x19d/0x3b0 ? __pfx___device_attach+0x10/0x10 ? do_raw_spin_unlock+0x53/0x220 device_initial_probe+0x78/0xa0 bus_probe_device+0x5b/0x130 device_add+0xcfd/0x1430 ? __pfx_device_add+0x10/0x10 ? insert_resource+0x34/0x50 ? lock_release+0xc9/0x290 platform_device_add+0x24e/0x590 ? __pfx_meson_crypto_probe_repro_init+0x10/0x10 [meson_crypto_probe_repro] meson_crypto_probe_repro_init+0x330/0xff0 [meson_crypto_probe_repro] do_one_initcall+0xc0/0x450 ? __pfx_do_one_initcall+0x10/0x10 ? _raw_spin_unlock_irqrestore+0x2c/0x50 ? __create_object+0x59/0x80 ? kasan_unpoison+0x27/0x60 do_init_module+0x27b/0x7d0 ? __pfx_do_init_module+0x10/0x10 ? kasan_quarantine_put+0x84/0x1d0 ? kfree+0x32c/0x510 ? load_module+0x561e/0x5ff0 load_module+0x54fe/0x5ff0 ? __pfx_load_module+0x10/0x10 ? security_file_permission+0x20/0x40 ? kernel_read_file+0x23d/0x6e0 ? mmap_region+0x235/0x4a0 ? __pfx_kernel_read_file+0x10/0x10 ? __file_has_perm+0x2c0/0x3e0 init_module_from_file+0x158/0x180 ? __pfx_init_module_from_file+0x10/0x10 ? __lock_acquire+0x45a/0x1ba0 ? idempotent_init_module+0x315/0x610 ? lock_release+0xc9/0x290 ? lock ---truncated---
View original CVE JSON
{
"id": "CVE-2026-64599",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-06T08:16:35.603",
"lastModified": "2026-10-24T16:10:00.153",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: amlogic - avoid double cleanup in meson_crypto_probe()\n\nWhen meson_allocate_chanlist() fails after a partial allocation, it already\nunwinds the allocated chanlist state through its local error path.\nmeson_crypto_probe() then jump to error_flow and calls\nmeson_free_chanlist() again, causing the same per-flow resources to be torn\ndown twice. In the reproduced failure path, the second teardown\nre-entered crypto_engine_exit() on an already destroyed worker and KASAN\nreported a slab-use-after-free in kthread_destroy_worker().\n\nPrevent double-free by handling partial allocation failures locally within\nmeson_allocate_chanlist() and skipping the outer cleanup path.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable.\n\nThe bug was reproduced in a QEMU x86_64 guest booted with KASAN on v7.1,\nusing the reproducer under tools/testing/meson_crypto_probe. The reproducer\nforces the second dma_alloc_attrs() call in the gxl-crypto probe path to\nreturn NULL, making meson_allocate_chanlist() fail after partial\ninitialization. On the unpatched kernel this reliably triggered a\nslab-use-after-free. With this fix applied, the same reproducer no longer\nemits any KASAN report and the probe fails cleanly with -ENOMEM.\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in kthread_destroy_worker+0xb2/0xd0\n Read of size 8 at addr ff1100010c057a68 by task insmod/265\n\n CPU: 1 UID: 0 PID: 265 Comm: insmod Tainted: G O 7.1.0-rc2-00376-g810af9adc907-dirty #10 PREEMPT(lazy)\n Tainted: [O]=OOT_MODULE\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n Call Trace:\n <TASK>\n dump_stack_lvl+0x68/0xa0\n print_report+0xcb/0x5e0\n ? __virt_addr_valid+0x21d/0x3f0\n ? kthread_destroy_worker+0xb2/0xd0\n ? kthread_destroy_worker+0xb2/0xd0\n kasan_report+0xca/0x100\n ? kthread_destroy_worker+0xb2/0xd0\n kthread_destroy_worker+0xb2/0xd0\n meson_crypto_probe+0x4d0/0xc10 [amlogic_gxl_crypto]\n platform_probe+0x99/0x140\n really_probe+0x1c6/0x6a0\n ? __pfx___device_attach_driver+0x10/0x10\n __driver_probe_device+0x248/0x310\n ? acpi_driver_match_device+0xb0/0x100\n driver_probe_device+0x48/0x210\n ? __pfx___device_attach_driver+0x10/0x10\n __device_attach_driver+0x160/0x320\n bus_for_each_drv+0x104/0x190\n ? __pfx_bus_for_each_drv+0x10/0x10\n ? _raw_spin_unlock_irqrestore+0x2c/0x50\n __device_attach+0x19d/0x3b0\n ? __pfx___device_attach+0x10/0x10\n ? do_raw_spin_unlock+0x53/0x220\n device_initial_probe+0x78/0xa0\n bus_probe_device+0x5b/0x130\n device_add+0xcfd/0x1430\n ? __pfx_device_add+0x10/0x10\n ? insert_resource+0x34/0x50\n ? lock_release+0xc9/0x290\n platform_device_add+0x24e/0x590\n ? __pfx_meson_crypto_probe_repro_init+0x10/0x10 [meson_crypto_probe_repro]\n meson_crypto_probe_repro_init+0x330/0xff0 [meson_crypto_probe_repro]\n do_one_initcall+0xc0/0x450\n ? __pfx_do_one_initcall+0x10/0x10\n ? _raw_spin_unlock_irqrestore+0x2c/0x50\n ? __create_object+0x59/0x80\n ? kasan_unpoison+0x27/0x60\n do_init_module+0x27b/0x7d0\n ? __pfx_do_init_module+0x10/0x10\n ? kasan_quarantine_put+0x84/0x1d0\n ? kfree+0x32c/0x510\n ? load_module+0x561e/0x5ff0\n load_module+0x54fe/0x5ff0\n ? __pfx_load_module+0x10/0x10\n ? security_file_permission+0x20/0x40\n ? kernel_read_file+0x23d/0x6e0\n ? mmap_region+0x235/0x4a0\n ? __pfx_kernel_read_file+0x10/0x10\n ? __file_has_perm+0x2c0/0x3e0\n init_module_from_file+0x158/0x180\n ? __pfx_init_module_from_file+0x10/0x10\n ? __lock_acquire+0x45a/0x1ba0\n ? idempotent_init_module+0x315/0x610\n ? lock_release+0xc9/0x290\n ? lock\n---truncated---"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncrypto: amlogic - evitar doble limpieza en meson_crypto_probe()\n\nCuando meson_allocate_chanlist() falla después de una asignación parcial, ya deshace el estado de la lista de canales asignada a través de su ruta de error local. meson_crypto_probe() luego salta a error_flow y llama a meson_free_chanlist() de nuevo, causando que los mismos recursos por flujo sean desmantelados dos veces. En la ruta de fallo reproducida, el segundo desmantelamiento reingresó a crypto_engine_exit() en un worker ya destruido y KASAN informó un uso después de liberación de slab en kthread_destroy_worker().\n\nEvitar la doble liberación manejando los fallos de asignación parcial localmente dentro de meson_allocate_chanlist() y omitiendo la ruta de limpieza externa.\n\nEl error fue señalado por primera vez por una herramienta de análisis experimental que estamos desarrollando para errores de gestión de memoria del kernel mientras analizábamos v6.13-rc1. La herramienta aún está en desarrollo y aún no está disponible públicamente.\n\nEl error fue reproducido en un invitado QEMU x86_64 arrancado con KASAN en v7.1, usando el reproductor bajo tools/testing/meson_crypto_probe. El reproductor fuerza la segunda llamada a dma_alloc_attrs() en la ruta de sondeo gxl-crypto a devolver NULL, haciendo que meson_allocate_chanlist() falle después de una inicialización parcial. En el kernel sin parchear, esto desencadenó de forma fiable un uso después de liberación de slab. Con esta corrección aplicada, el mismo reproductor ya no emite ningún informe KASAN y el sondeo falla limpiamente con -ENOMEM.\n\n ==================================================================\n BUG: KASAN: uso después de liberación de slab en kthread_destroy_worker+0xb2/0xd0\n Lectura de tamaño 8 en la dirección ff1100010c057a68 por la tarea insmod/265\n\n CPU: 1 UID: 0 PID: 265 Comm: insmod Tainted: G O 7.1.0-rc2-00376-g810af9adc907-dirty #10 PREEMPT(lazy)\n Tainted: [O]=OOT_MODULE\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014\n Rastro de Llamada:\n [TAREA]\n dump_stack_lvl+0x68/0xa0\n print_report+0xcb/0x5e0\n ? __virt_addr_valid+0x21d/0x3f0\n ? kthread_destroy_worker+0xb2/0xd0\n ? kthread_destroy_worker+0xb2/0xd0\n kasan_report+0xca/0x100\n ? kthread_destroy_worker+0xb2/0xd0\n kthread_destroy_worker+0xb2/0xd0\n meson_crypto_probe+0x4d0/0xc10 [amlogic_gxl_crypto]\n platform_probe+0x99/0x140\n really_probe+0x1c6/0x6a0\n ? __pfx___device_attach_driver+0x10/0x10\n __driver_probe_device+0x248/0x310\n ? acpi_driver_match_device+0xb0/0x100\n driver_probe_device+0x48/0x210\n ? __pfx___device_attach_driver+0x10/0x10\n __device_attach_driver+0x160/0x320\n bus_for_each_drv+0x104/0x190\n ? __pfx_bus_for_each_drv+0x10/0x10\n ? _raw_spin_unlock_irqrestore+0x2c/0x50\n __device_attach+0x19d/0x3b0\n ? __pfx___device_attach+0x10/0x10\n ? do_raw_spin_unlock+0x53/0x220\n device_initial_probe+0x78/0xa0\n bus_probe_device+0x5b/0x130\n device_add+0xcfd/0x1430\n ? __pfx_device_add+0x10/0x10\n ? insert_resource+0x34/0x50\n ? lock_release+0xc9/0x290\n platform_device_add+0x24e/0x590\n ? __pfx_meson_crypto_probe_repro_init+0x10/0x10 [meson_crypto_probe_repro]\n meson_crypto_probe_repro_init+0x330/0xff0 [meson_crypto_probe_repro]\n do_one_initcall+0xc0/0x450\n ? __pfx_do_one_initcall+0x10/0x10\n ? _raw_spin_unlock_irqrestore+0x2c/0x50\n ? __create_object+0x59/0x80\n ? kasan_unpoison+0x27/0x60\n do_init_module+0x27b/0x7d0\n ? __pfx_do_init_module+0x10/0x10\n ? kasan_quarantine_put+0x84/0x1d0\n ? kfree+0x32c/0x510\n ? load_module+0x561e/0x5ff0\n load_module+0x54fe/0x5ff0\n ? __pfx_load_module+0x10/0x10\n ? security_file_permission+0x20/0x40\n ? kernel_read_file+0x23d/0x6e0\n ? mmap_region+0x235/0x4a0\n ? __pfx_kernel_read_file+0x10/0x10\n ? __file_has_perm+0x2c0/0x3e0\n init_module_from_file+0x158/0x180\n ? --TRUNCADO--"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/crypto/amlogic/amlogic-gxl-core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "c80360b4e85099fc3835378a96a59c0a2480fb07",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "5b452019a4127f63c1f2147237fc287d1581f606",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "f30e2b879bda14bc3e1524fba6f8ab9ec119da90",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "6effdbaca3cd8354540bdf42c7f5fb84412afeb7",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "84a00be9b736aa5dce902a290f62cbbbdcfab9ed",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "6dda8406d8a3da2519c8b388d443d7357839cb63",
"versionType": "git",
"status": "affected"
},
{
"version": "48fe583fe54177bfb80f348e2a5cc34c3f710095",
"lessThan": "6d827ade51a24e18d81afb9f32756d339520a14c",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/crypto/amlogic/amlogic-gxl-core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.5",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.5",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.261",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.212",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.178",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.145",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.96",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.39",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1.4",
"lessThanOrEqual": "7.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"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": "2026-10-16T15:43:28.785697Z",
"id": "CVE-2026-64599",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-415"
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/5b452019a4127f63c1f2147237fc287d1581f606",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6d827ade51a24e18d81afb9f32756d339520a14c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6dda8406d8a3da2519c8b388d443d7357839cb63",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6effdbaca3cd8354540bdf42c7f5fb84412afeb7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/84a00be9b736aa5dce902a290f62cbbbdcfab9ed",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c80360b4e85099fc3835378a96a59c0a2480fb07",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f30e2b879bda14bc3e1524fba6f8ab9ec119da90",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}