cve-2024-26859
Vulnerability from cvelistv5
Published
2024-04-17 10:27
Modified
2024-08-02 00:14
Severity
Summary
net/bnx2x: Prevent access to a freed page in page_pool
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/bnx2x: Prevent access to a freed page in page_pool\n\nFix race condition leading to system crash during EEH error handling\n\nDuring EEH error recovery, the bnx2x driver\u0027s transmit timeout logic\ncould cause a race condition when handling reset tasks. The\nbnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(),\nwhich ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload()\nSGEs are freed using bnx2x_free_rx_sge_range(). However, this could\noverlap with the EEH driver\u0027s attempt to reset the device using\nbnx2x_io_slot_reset(), which also tries to free SGEs. This race\ncondition can result in system crashes due to accessing freed memory\nlocations in bnx2x_free_rx_sge()\n\n799  static inline void bnx2x_free_rx_sge(struct bnx2x *bp,\n800\t\t\t\tstruct bnx2x_fastpath *fp, u16 index)\n801  {\n802\tstruct sw_rx_page *sw_buf = \u0026fp-\u003erx_page_ring[index];\n803     struct page *page = sw_buf-\u003epage;\n....\nwhere sw_buf was set to NULL after the call to dma_unmap_page()\nby the preceding thread.\n\n    EEH: Beginning: \u0027slot_reset\u0027\n    PCI 0011:01:00.0#10000: EEH: Invoking bnx2x-\u003eslot_reset()\n    bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing...\n    bnx2x 0011:01:00.0: enabling device (0140 -\u003e 0142)\n    bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --\u003e driver unload\n    Kernel attempted to read user page (0) - exploit attempt? (uid: 0)\n    BUG: Kernel NULL pointer dereference on read at 0x00000000\n    Faulting instruction address: 0xc0080000025065fc\n    Oops: Kernel access of bad area, sig: 11 [#1]\n    .....\n    Call Trace:\n    [c000000003c67a20] [c00800000250658c] bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable)\n    [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0\n    [c000000003c67b60] [c000000000052130] eeh_pe_report+0x180/0x550\n    [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60\n    [c000000003c67d50] [c000000000053a84] eeh_event_handler+0xf4/0x170\n    [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0\n    [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64\n\nTo solve this issue, we need to verify page pool allocations before\nfreeing."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26859",
    "datePublished": "2024-04-17T10:27:23.709Z",
    "dateReserved": "2024-02-19T14:20:24.183Z",
    "dateUpdated": "2024-08-02T00:14:13.698Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26859\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:08.893\",\"lastModified\":\"2024-06-27T12:15:21.563\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/bnx2x: Prevent access to a freed page in page_pool\\n\\nFix race condition leading to system crash during EEH error handling\\n\\nDuring EEH error recovery, the bnx2x driver\u0027s transmit timeout logic\\ncould cause a race condition when handling reset tasks. The\\nbnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(),\\nwhich ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload()\\nSGEs are freed using bnx2x_free_rx_sge_range(). However, this could\\noverlap with the EEH driver\u0027s attempt to reset the device using\\nbnx2x_io_slot_reset(), which also tries to free SGEs. This race\\ncondition can result in system crashes due to accessing freed memory\\nlocations in bnx2x_free_rx_sge()\\n\\n799  static inline void bnx2x_free_rx_sge(struct bnx2x *bp,\\n800\\t\\t\\t\\tstruct bnx2x_fastpath *fp, u16 index)\\n801  {\\n802\\tstruct sw_rx_page *sw_buf = \u0026fp-\u003erx_page_ring[index];\\n803     struct page *page = sw_buf-\u003epage;\\n....\\nwhere sw_buf was set to NULL after the call to dma_unmap_page()\\nby the preceding thread.\\n\\n    EEH: Beginning: \u0027slot_reset\u0027\\n    PCI 0011:01:00.0#10000: EEH: Invoking bnx2x-\u003eslot_reset()\\n    bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing...\\n    bnx2x 0011:01:00.0: enabling device (0140 -\u003e 0142)\\n    bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --\u003e driver unload\\n    Kernel attempted to read user page (0) - exploit attempt? (uid: 0)\\n    BUG: Kernel NULL pointer dereference on read at 0x00000000\\n    Faulting instruction address: 0xc0080000025065fc\\n    Oops: Kernel access of bad area, sig: 11 [#1]\\n    .....\\n    Call Trace:\\n    [c000000003c67a20] [c00800000250658c] bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable)\\n    [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0\\n    [c000000003c67b60] [c000000000052130] eeh_pe_report+0x180/0x550\\n    [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60\\n    [c000000003c67d50] [c000000000053a84] eeh_event_handler+0xf4/0x170\\n    [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0\\n    [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64\\n\\nTo solve this issue, we need to verify page pool allocations before\\nfreeing.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/bnx2x: impide el acceso a una p\u00e1gina liberada en page_pool. Repara la condici\u00f3n de carrera que provoca un bloqueo del sistema durante el manejo de errores EEH. Durante la recuperaci\u00f3n de errores EEH, la l\u00f3gica de tiempo de espera de transmisi\u00f3n del controlador bnx2x podr\u00eda provocar una carrera. condici\u00f3n al manejar tareas de reinicio. El bnx2x_tx_timeout() programa tareas de reinicio a trav\u00e9s de bnx2x_sp_rtnl_task(), lo que finalmente conduce a bnx2x_nic_unload(). En bnx2x_nic_unload(), los SGE se liberan utilizando bnx2x_free_rx_sge_range(). Sin embargo, esto podr\u00eda superponerse con el intento del controlador EEH de restablecer el dispositivo usando bnx2x_io_slot_reset(), que tambi\u00e9n intenta liberar los SGE. This race condition can result in system crashes due to accessing freed memory locations in bnx2x_free_rx_sge() 799 static inline void bnx2x_free_rx_sge(struct bnx2x *bp, 800 struct bnx2x_fastpath *fp, u16 index) 801 { 802 struct sw_rx_page *sw_buf = \u0026amp;fp-\u0026gt;rx_page_ring [\u00edndice]; 803 p\u00e1gina de estructura *p\u00e1gina = sw_buf-\u0026gt;p\u00e1gina; .... donde sw_buf se configur\u00f3 en NULL despu\u00e9s de la llamada a dma_unmap_page() por el hilo anterior. EEH: Comienzo: \u0027slot_reset\u0027 PCI 0011:01:00.0#10000: EEH: Invocando bnx2x-\u0026gt;slot_reset() bnx2x: [bnx2x_io_slot_reset:14228(eth1)]Reinicio de ranura IO inicializando... bnx2x 0011:01:00.0: habilitando dispositivo (0140 -\u0026gt; 0142) bnx2x: [bnx2x_io_slot_reset:14244(eth1)]Restablecimiento de ranura IO --\u0026gt; descarga del controlador El kernel intent\u00f3 leer la p\u00e1gina del usuario (0): \u00bfintento de explotaci\u00f3n? (uid: 0) ERROR: Desreferencia del puntero NULL del kernel al leer en 0x00000000 Direcci\u00f3n de instrucci\u00f3n err\u00f3nea: 0xc0080000025065fc Ups: Acceso al kernel del \u00e1rea defectuosa, firma: 11 [#1] ..... Seguimiento de llamadas: [c000000003c67a20] [c00800000250658c] 2x_io_slot_reset +0x204/0x610 [bnx2x] (no confiable) [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0 [c000000003c67b60] [c000000000052130] 180/0x550 [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60 [c000000003c67d50] [c000000000053a84] eeh_event_handler +0xf4/0x170 [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0 [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64 Para resolver este problema, necesitamos verifique las asignaciones del grupo de p\u00e1ginas antes de liberarlas.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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