CVE-2022-49217
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
scsi: pm8001: Fix abort all task initialization
In pm80xx_send_abort_all(), the n_elem field of the ccb used is not initialized to 0. This missing initialization sometimes lead to the task completion path seeing the ccb with a non-zero n_elem resulting in the execution of invalid dma_unmap_sg() calls in pm8001_ccb_task_free(), causing a crash such as:
Avoid this issue by always initializing the ccb n_elem field to 0 in pm8001_send_abort_all(), pm8001_send_read_log() and pm80xx_send_abort_all().
Detalles técnicos trazas, registros y código del informe original
[ 197.676341] RIP: 0010:iommu_dma_unmap_sg+0x6d/0x280 [ 197.700204] RSP: 0018:ffff889bbcf89c88 EFLAGS: 00010012 [ 197.705485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83d0bda0 [ 197.712687] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88810dffc0d0 [ 197.719887] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8881c790098b [ 197.727089] R10: ffffed1038f20131 R11: 0000000000000001 R12: 0000000000000000 [ 197.734296] R13: ffff88810dffc0d0 R14: 0000000000000010 R15: 0000000000000000 [ 197.741493] FS: 0000000000000000(0000) GS:ffff889bbcf80000(0000) knlGS:0000000000000000 [ 197.749659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 197.755459] CR2: 00007f16c1b42734 CR3: 0000000004814000 CR4: 0000000000350ee0 [ 197.762656] Call Trace: [ 197.765127] <IRQ> [ 197.767162] pm8001_ccb_task_free+0x5f1/0x820 [pm80xx] [ 197.772364] ? do_raw_spin_unlock+0x54/0x220 [ 197.776680] pm8001_mpi_task_abort_resp+0x2ce/0x4f0 [pm80xx] [ 197.782406] process_oq+0xe85/0x7890 [pm80xx] [ 197.786817] ? lock_acquire+0x194/0x490 [ 197.790697] ? handle_irq_event+0x10e/0x1b0 [ 197.794920] ? mpi_sata_completion+0x2d70/0x2d70 [pm80xx] [ 197.800378] ? __wake_up_bit+0x100/0x100 [ 197.804340] ? lock_is_held_type+0x98/0x110 [ 197.808565] pm80xx_chip_isr+0x94/0x130 [pm80xx] [ 197.813243] tasklet_action_common.constprop.0+0x24b/0x2f0 [ 197.818785] __do_softirq+0x1b5/0x82d [ 197.822485] ? do_raw_spin_unlock+0x54/0x220 [ 197.826799] __irq_exit_rcu+0x17e/0x1e0 [ 197.830678] irq_exit_rcu+0xa/0x20 [ 197.834114] common_interrupt+0x78/0x90 [ 197.840051] </IRQ> [ 197.844236] <TASK> [ 197.848397] asm_common_interrupt+0x1e/0x40
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.30%
- Percentil entre todas las CVEs puntuadas: 21
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-909
Referencias
- https://git.kernel.org/stable/c/16cd02e0951b520bef324adb9a35afcc92501caf
- https://git.kernel.org/stable/c/1824a21b2cedc5774a5adfa74f5f7b90472d8677
- https://git.kernel.org/stable/c/279f318bd7d6e04e6e0bc7b8cd8e190da8fa37a4
- https://git.kernel.org/stable/c/326d894adf89f3c707b7784becbe241830daaab6
- https://git.kernel.org/stable/c/765674e3b30121782a2b792684554baa48c61f5e
- https://git.kernel.org/stable/c/7f12845c8389855dbcc67baa068b6832dc4a396e
- https://git.kernel.org/stable/c/9914461db82caee6c519acfbe10a86fe11bcdeca
- https://git.kernel.org/stable/c/c8db786858d895ac58342f67767b4999ae6538fa
- https://git.kernel.org/stable/c/d6ec4471550cc53e96485a7124c5891e6a38d1c3
JSON original (NVD)
Mostrar
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"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
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"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-909"
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix abort all task initialization\n\nIn pm80xx_send_abort_all(), the n_elem field of the ccb used is not\ninitialized to 0. This missing initialization sometimes lead to the task\ncompletion path seeing the ccb with a non-zero n_elem resulting in the\nexecution of invalid dma_unmap_sg() calls in pm8001_ccb_task_free(),\ncausing a crash such as:\n\n[ 197.676341] RIP: 0010:iommu_dma_unmap_sg+0x6d/0x280\n[ 197.700204] RSP: 0018:ffff889bbcf89c88 EFLAGS: 00010012\n[ 197.705485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83d0bda0\n[ 197.712687] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88810dffc0d0\n[ 197.719887] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8881c790098b\n[ 197.727089] R10: ffffed1038f20131 R11: 0000000000000001 R12: 0000000000000000\n[ 197.734296] R13: ffff88810dffc0d0 R14: 0000000000000010 R15: 0000000000000000\n[ 197.741493] FS: 0000000000000000(0000) GS:ffff889bbcf80000(0000) knlGS:0000000000000000\n[ 197.749659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 197.755459] CR2: 00007f16c1b42734 CR3: 0000000004814000 CR4: 0000000000350ee0\n[ 197.762656] Call Trace:\n[ 197.765127] <IRQ>\n[ 197.767162] pm8001_ccb_task_free+0x5f1/0x820 [pm80xx]\n[ 197.772364] ? do_raw_spin_unlock+0x54/0x220\n[ 197.776680] pm8001_mpi_task_abort_resp+0x2ce/0x4f0 [pm80xx]\n[ 197.782406] process_oq+0xe85/0x7890 [pm80xx]\n[ 197.786817] ? lock_acquire+0x194/0x490\n[ 197.790697] ? handle_irq_event+0x10e/0x1b0\n[ 197.794920] ? mpi_sata_completion+0x2d70/0x2d70 [pm80xx]\n[ 197.800378] ? __wake_up_bit+0x100/0x100\n[ 197.804340] ? lock_is_held_type+0x98/0x110\n[ 197.808565] pm80xx_chip_isr+0x94/0x130 [pm80xx]\n[ 197.813243] tasklet_action_common.constprop.0+0x24b/0x2f0\n[ 197.818785] __do_softirq+0x1b5/0x82d\n[ 197.822485] ? do_raw_spin_unlock+0x54/0x220\n[ 197.826799] __irq_exit_rcu+0x17e/0x1e0\n[ 197.830678] irq_exit_rcu+0xa/0x20\n[ 197.834114] common_interrupt+0x78/0x90\n[ 197.840051] </IRQ>\n[ 197.844236] <TASK>\n[ 197.848397] asm_common_interrupt+0x1e/0x40\n\nAvoid this issue by always initializing the ccb n_elem field to 0 in\npm8001_send_abort_all(), pm8001_send_read_log() and\npm80xx_send_abort_all()."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: pm8001: Se ha corregido la interrupción de todas las inicializaciones de tareas. En pm80xx_send_abort_all(), el campo n_elem del ccb utilizado no se inicializa a 0. Esta inicialización faltante a veces provoca que la ruta de finalización de la tarea vea el ccb con un n_elem distinto de cero, lo que da como resultado la ejecución de llamadas dma_unmap_sg() no válidas en pm8001_ccb_task_free(), lo que provoca un bloqueo como el siguiente: [ 197.676341] RIP: 0010:iommu_dma_unmap_sg+0x6d/0x280 [ 197.700204] RSP: 0018:ffff889bbcf89c88 EFLAGS: 00010012 [ 197.705485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83d0bda0 [ 197.712687] RDX: 00000000000000002 RSI: 0000000000000000 RDI: ffff88810dffc0d0 [ 197.719887] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8881c790098b [ 197.727089] R10: ffffed1038f20131 R11: 0000000000000001 R12: 0000000000000000 [ 197.734296] R13: ffff88810dffc0d0 R14: 0000000000000010 R15: 0000000000000000 [ 197.741493] FS: 000000000000000(0000) GS:ffff889bbcf80000(0000) knlGS:0000000000000000 [ 197.749659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 197.755459] CR2: 00007f16c1b42734 CR3: 0000000004814000 CR4: 0000000000350ee0 [ 197.762656] Rastreo de llamadas: [ 197.765127] [ 197.767162] pm8001_ccb_task_free+0x5f1/0x820 [pm80xx] [ 197.772364] ? do_raw_spin_unlock+0x54/0x220 [ 197.776680] pm8001_mpi_task_abort_resp+0x2ce/0x4f0 [pm80xx] [ 197.782406] process_oq+0xe85/0x7890 [pm80xx] [ 197.786817] ? lock_acquire+0x194/0x490 [ 197.790697] ? handle_irq_event+0x10e/0x1b0 [ 197.794920] ? mpi_sata_completion+0x2d70/0x2d70 [pm80xx] [ 197.800378] ? __wake_up_bit+0x100/0x100 [ 197.804340] ? lock_is_held_type+0x98/0x110 [ 197.808565] pm80xx_chip_isr+0x94/0x130 [pm80xx] [ 197.813243] tasklet_action_common.constprop.0+0x24b/0x2f0 [ 197.818785] __do_softirq+0x1b5/0x82d [ 197.822485] ? do_raw_spin_unlock+0x54/0x220 [ 197.826799] __irq_exit_rcu+0x17e/0x1e0 [ 197.830678] irq_exit_rcu+0xa/0x20 [ 197.834114] common_interrupt+0x78/0x90 [ 197.840051] [ 197.844236] [ 197.848397] asm_common_interrupt+0x1e/0x40 Evite este problema inicializando siempre el campo n_elem de ccb en 0 en pm8001_send_abort_all(), pm8001_send_read_log() y pm80xx_send_abort_all()."
}
],
"lastModified": "2026-06-17T05:17:24.970",
"configurations": [
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