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CVE-2025-37993 (GCVE-0-2025-37993)

Vulnerability from cvelistv5 – Published: 2025-05-29 13:15 – Updated: 2026-05-11 21:19
VLAI
Title
can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe
Summary
In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe The spin lock tx_handling_spinlock in struct m_can_classdev is not being initialized. This leads the following spinlock bad magic complaint from the kernel, eg. when trying to send CAN frames with cansend from can-utils: | BUG: spinlock bad magic on CPU#0, cansend/95 | lock: 0xff60000002ec1010, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 | CPU: 0 UID: 0 PID: 95 Comm: cansend Not tainted 6.15.0-rc3-00032-ga79be02bba5c #5 NONE | Hardware name: MachineWare SIM-V (DT) | Call Trace: | [<ffffffff800133e0>] dump_backtrace+0x1c/0x24 | [<ffffffff800022f2>] show_stack+0x28/0x34 | [<ffffffff8000de3e>] dump_stack_lvl+0x4a/0x68 | [<ffffffff8000de70>] dump_stack+0x14/0x1c | [<ffffffff80003134>] spin_dump+0x62/0x6e | [<ffffffff800883ba>] do_raw_spin_lock+0xd0/0x142 | [<ffffffff807a6fcc>] _raw_spin_lock_irqsave+0x20/0x2c | [<ffffffff80536dba>] m_can_start_xmit+0x90/0x34a | [<ffffffff806148b0>] dev_hard_start_xmit+0xa6/0xee | [<ffffffff8065b730>] sch_direct_xmit+0x114/0x292 | [<ffffffff80614e2a>] __dev_queue_xmit+0x3b0/0xaa8 | [<ffffffff8073b8fa>] can_send+0xc6/0x242 | [<ffffffff8073d1c0>] raw_sendmsg+0x1a8/0x36c | [<ffffffff805ebf06>] sock_write_iter+0x9a/0xee | [<ffffffff801d06ea>] vfs_write+0x184/0x3a6 | [<ffffffff801d0a88>] ksys_write+0xa0/0xc0 | [<ffffffff801d0abc>] __riscv_sys_write+0x14/0x1c | [<ffffffff8079ebf8>] do_trap_ecall_u+0x168/0x212 | [<ffffffff807a830a>] handle_exception+0x146/0x152 Initializing the spin lock in m_can_class_allocate_dev solves that problem.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1fa80e23c15051edc1c594270517de3517ded798 , < 2ecce25ea296f328d79070ee36229a15aeeb7aca (git)
Affected: 1fa80e23c15051edc1c594270517de3517ded798 , < 7d5379cfecfdd665e4206bc4f19824656388779f (git)
Affected: 1fa80e23c15051edc1c594270517de3517ded798 , < dcaeeb8ae84c5506ebc574732838264f3887738c (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.29 , ≤ 6.12.* (semver)
Unaffected: 6.14.7 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe\n\nThe spin lock tx_handling_spinlock in struct m_can_classdev is not\nbeing initialized. This leads the following spinlock bad magic\ncomplaint from the kernel, eg. when trying to send CAN frames with\ncansend from can-utils:\n\n| BUG: spinlock bad magic on CPU#0, cansend/95\n|  lock: 0xff60000002ec1010, .magic: 00000000, .owner: \u003cnone\u003e/-1, .owner_cpu: 0\n| CPU: 0 UID: 0 PID: 95 Comm: cansend Not tainted 6.15.0-rc3-00032-ga79be02bba5c #5 NONE\n| Hardware name: MachineWare SIM-V (DT)\n| Call Trace:\n| [\u003cffffffff800133e0\u003e] dump_backtrace+0x1c/0x24\n| [\u003cffffffff800022f2\u003e] show_stack+0x28/0x34\n| [\u003cffffffff8000de3e\u003e] dump_stack_lvl+0x4a/0x68\n| [\u003cffffffff8000de70\u003e] dump_stack+0x14/0x1c\n| [\u003cffffffff80003134\u003e] spin_dump+0x62/0x6e\n| [\u003cffffffff800883ba\u003e] do_raw_spin_lock+0xd0/0x142\n| [\u003cffffffff807a6fcc\u003e] _raw_spin_lock_irqsave+0x20/0x2c\n| [\u003cffffffff80536dba\u003e] m_can_start_xmit+0x90/0x34a\n| [\u003cffffffff806148b0\u003e] dev_hard_start_xmit+0xa6/0xee\n| [\u003cffffffff8065b730\u003e] sch_direct_xmit+0x114/0x292\n| [\u003cffffffff80614e2a\u003e] __dev_queue_xmit+0x3b0/0xaa8\n| [\u003cffffffff8073b8fa\u003e] can_send+0xc6/0x242\n| [\u003cffffffff8073d1c0\u003e] raw_sendmsg+0x1a8/0x36c\n| [\u003cffffffff805ebf06\u003e] sock_write_iter+0x9a/0xee\n| [\u003cffffffff801d06ea\u003e] vfs_write+0x184/0x3a6\n| [\u003cffffffff801d0a88\u003e] ksys_write+0xa0/0xc0\n| [\u003cffffffff801d0abc\u003e] __riscv_sys_write+0x14/0x1c\n| [\u003cffffffff8079ebf8\u003e] do_trap_ecall_u+0x168/0x212\n| [\u003cffffffff807a830a\u003e] handle_exception+0x146/0x152\n\nInitializing the spin lock in m_can_class_allocate_dev solves that\nproblem."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:19:14.231Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/dcaeeb8ae84c5506ebc574732838264f3887738c"
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      ],
      "title": "can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe",
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    "cveId": "CVE-2025-37993",
    "datePublished": "2025-05-29T13:15:52.811Z",
    "dateReserved": "2025-04-16T04:51:23.976Z",
    "dateUpdated": "2026-05-11T21:19:14.231Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37993\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-29T14:15:35.767\",\"lastModified\":\"2026-06-17T09:15:50.493\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe\\n\\nThe spin lock tx_handling_spinlock in struct m_can_classdev is not\\nbeing initialized. This leads the following spinlock bad magic\\ncomplaint from the kernel, eg. when trying to send CAN frames with\\ncansend from can-utils:\\n\\n| BUG: spinlock bad magic on CPU#0, cansend/95\\n|  lock: 0xff60000002ec1010, .magic: 00000000, .owner: \u003cnone\u003e/-1, .owner_cpu: 0\\n| CPU: 0 UID: 0 PID: 95 Comm: cansend Not tainted 6.15.0-rc3-00032-ga79be02bba5c #5 NONE\\n| Hardware name: MachineWare SIM-V (DT)\\n| Call Trace:\\n| [\u003cffffffff800133e0\u003e] dump_backtrace+0x1c/0x24\\n| [\u003cffffffff800022f2\u003e] show_stack+0x28/0x34\\n| [\u003cffffffff8000de3e\u003e] dump_stack_lvl+0x4a/0x68\\n| [\u003cffffffff8000de70\u003e] dump_stack+0x14/0x1c\\n| [\u003cffffffff80003134\u003e] spin_dump+0x62/0x6e\\n| [\u003cffffffff800883ba\u003e] do_raw_spin_lock+0xd0/0x142\\n| [\u003cffffffff807a6fcc\u003e] _raw_spin_lock_irqsave+0x20/0x2c\\n| [\u003cffffffff80536dba\u003e] m_can_start_xmit+0x90/0x34a\\n| [\u003cffffffff806148b0\u003e] dev_hard_start_xmit+0xa6/0xee\\n| [\u003cffffffff8065b730\u003e] sch_direct_xmit+0x114/0x292\\n| [\u003cffffffff80614e2a\u003e] __dev_queue_xmit+0x3b0/0xaa8\\n| [\u003cffffffff8073b8fa\u003e] can_send+0xc6/0x242\\n| [\u003cffffffff8073d1c0\u003e] raw_sendmsg+0x1a8/0x36c\\n| [\u003cffffffff805ebf06\u003e] sock_write_iter+0x9a/0xee\\n| [\u003cffffffff801d06ea\u003e] vfs_write+0x184/0x3a6\\n| [\u003cffffffff801d0a88\u003e] ksys_write+0xa0/0xc0\\n| [\u003cffffffff801d0abc\u003e] __riscv_sys_write+0x14/0x1c\\n| [\u003cffffffff8079ebf8\u003e] do_trap_ecall_u+0x168/0x212\\n| [\u003cffffffff807a830a\u003e] handle_exception+0x146/0x152\\n\\nInitializing the spin lock in m_can_class_allocate_dev solves that\\nproblem.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: m_can: m_can_class_allocate_dev(): inicializar spinlock en la sonda del dispositivo. El spinlock tx_handling_spinlock en la estructura m_can_classdev no se est\u00e1 inicializando. Esto provoca la siguiente queja de spinlock bad magic del kernel, p. ej. al intentar enviar tramas CAN con cansend desde can-utils: | BUG: spinlock bad magic en CPU#0, cansend/95 | lock: 0xff60000002ec1010, .magic: 00000000, .owner: /-1, .owner_cpu: 0 | CPU: 0 UID: 0 PID: 95 Comm: cansend No contaminado 6.15.0-rc3-00032-ga79be02bba5c #5 NONE | Nombre del hardware: MachineWare SIM-V (DT) | Rastreo de llamadas: | [] dump_backtrace+0x1c/0x24 | [] show_stack+0x28/0x34 | [] dump_stack_lvl+0x4a/0x68 | [] dump_stack+0x14/0x1c | [] spin_dump+0x62/0x6e | [] do_raw_spin_lock+0xd0/0x142 | [] _raw_spin_lock_irqsave+0x20/0x2c | [] m_can_start_xmit+0x90/0x34a | [] dev_hard_start_xmit+0xa6/0xee | [] sch_direct_xmit+0x114/0x292 | [] __dev_queue_xmit+0x3b0/0xaa8 | [] can_send+0xc6/0x242 | [] raw_sendmsg+0x1a8/0x36c | [] sock_write_iter+0x9a/0xee | [] vfs_write+0x184/0x3a6 | [] ksys_write+0xa0/0xc0 | [] __riscv_sys_write+0x14/0x1c | [] do_trap_ecall_u+0x168/0x212 | [] handle_exception+0x146/0x152 Inicializar el bloqueo de giro en m_can_class_allocate_dev resuelve ese 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T00:14:13+00:00",
      "cve": "CVE-2025-37993",
      "id": "CVE-2025-37993",
      "initial_release_date": "2025-05-29T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-37993.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T00:20:55Z",
      "cve": "CVE-2025-37993",
      "id": "CVE-2025-37993",
      "initial_release_date": "2025-05-30T01:26:39Z",
      "product_status:known_not_affected": "505",
      "product_status:recommended": "78",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-37993",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-37993.json",
      "version": "17"
    }
  }
}



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