CVE-2024-26766
Vulnerability from cvelistv5
Published
2024-04-03 17:00
Modified
2024-11-05 09:15
Severity ?
Summary
IB/hfi1: Fix sdma.h tx->num_descs off-by-one error
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/115b7f3bc1dce590a6851a2dcf23dc1100c49790
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f38d22e645e2e994979426ea5a35186102ff3c2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47ae64df23ed1318e27bd9844e135a5e1c0e6e39
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52dc9a7a573dbf778625a0efca0fca55489f084b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5833024a9856f454a964a198c63a57e59e07baf5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9034a1bec35e9f725315a3bb6002ef39666114d9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2fef1d81becf4ff60e1a249477464eae3c3bc2a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6f57c6881916df39db7d95981a8ad2b9c3458d6
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/hfi1: Fix sdma.h tx-\u003enum_descs off-by-one error\n\nUnfortunately the commit `fd8958efe877` introduced another error\ncausing the `descs` array to overflow. This reults in further crashes\neasily reproducible by `sendmsg` system call.\n\n[ 1080.836473] general protection fault, probably for non-canonical address 0x400300015528b00a: 0000 [#1] PREEMPT SMP PTI\n[ 1080.869326] RIP: 0010:hfi1_ipoib_build_ib_tx_headers.constprop.0+0xe1/0x2b0 [hfi1]\n--\n[ 1080.974535] Call Trace:\n[ 1080.976990]  \u003cTASK\u003e\n[ 1081.021929]  hfi1_ipoib_send_dma_common+0x7a/0x2e0 [hfi1]\n[ 1081.027364]  hfi1_ipoib_send_dma_list+0x62/0x270 [hfi1]\n[ 1081.032633]  hfi1_ipoib_send+0x112/0x300 [hfi1]\n[ 1081.042001]  ipoib_start_xmit+0x2a9/0x2d0 [ib_ipoib]\n[ 1081.046978]  dev_hard_start_xmit+0xc4/0x210\n--\n[ 1081.148347]  __sys_sendmsg+0x59/0xa0\n\ncrash\u003e ipoib_txreq 0xffff9cfeba229f00\nstruct ipoib_txreq {\n  txreq = {\n    list = {\n      next = 0xffff9cfeba229f00,\n      prev = 0xffff9cfeba229f00\n    },\n    descp = 0xffff9cfeba229f40,\n    coalesce_buf = 0x0,\n    wait = 0xffff9cfea4e69a48,\n    complete = 0xffffffffc0fe0760 \u003chfi1_ipoib_sdma_complete\u003e,\n    packet_len = 0x46d,\n    tlen = 0x0,\n    num_desc = 0x0,\n    desc_limit = 0x6,\n    next_descq_idx = 0x45c,\n    coalesce_idx = 0x0,\n    flags = 0x0,\n    descs = {{\n        qw = {0x8024000120dffb00, 0x4}  # SDMA_DESC0_FIRST_DESC_FLAG (bit 63)\n      }, {\n        qw = {  0x3800014231b108, 0x4}\n      }, {\n        qw = { 0x310000e4ee0fcf0, 0x8}\n      }, {\n        qw = {  0x3000012e9f8000, 0x8}\n      }, {\n        qw = {  0x59000dfb9d0000, 0x8}\n      }, {\n        qw = {  0x78000e02e40000, 0x8}\n      }}\n  },\n  sdma_hdr =  0x400300015528b000,  \u003c\u003c\u003c invalid pointer in the tx request structure\n  sdma_status = 0x0,                   SDMA_DESC0_LAST_DESC_FLAG (bit 62)\n  complete = 0x0,\n  priv = 0x0,\n  txq = 0xffff9cfea4e69880,\n  skb = 0xffff9d099809f400\n}\n\nIf an SDMA send consists of exactly 6 descriptors and requires dword\npadding (in the 7th descriptor), the sdma_txreq descriptor array is not\nproperly expanded and the packet will overflow into the container\nstructure. This results in a panic when the send completion runs. The\nexact panic varies depending on what elements of the container structure\nget corrupted. The fix is to use the correct expression in\n_pad_sdma_tx_descs() to test the need to expand the descriptor array.\n\nWith this patch the crashes are no longer reproducible and the machine is\nstable."
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    "cveId": "CVE-2024-26766",
    "datePublished": "2024-04-03T17:00:48.642Z",
    "dateReserved": "2024-02-19T14:20:24.173Z",
    "dateUpdated": "2024-11-05T09:15:21.749Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26766\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-03T17:15:52.683\",\"lastModified\":\"2024-11-05T10:15:48.097\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nIB/hfi1: Fix sdma.h tx-\u003enum_descs off-by-one error\\n\\nUnfortunately the commit `fd8958efe877` introduced another error\\ncausing the `descs` array to overflow. This reults in further crashes\\neasily reproducible by `sendmsg` system call.\\n\\n[ 1080.836473] general protection fault, probably for non-canonical address 0x400300015528b00a: 0000 [#1] PREEMPT SMP PTI\\n[ 1080.869326] RIP: 0010:hfi1_ipoib_build_ib_tx_headers.constprop.0+0xe1/0x2b0 [hfi1]\\n--\\n[ 1080.974535] Call Trace:\\n[ 1080.976990]  \u003cTASK\u003e\\n[ 1081.021929]  hfi1_ipoib_send_dma_common+0x7a/0x2e0 [hfi1]\\n[ 1081.027364]  hfi1_ipoib_send_dma_list+0x62/0x270 [hfi1]\\n[ 1081.032633]  hfi1_ipoib_send+0x112/0x300 [hfi1]\\n[ 1081.042001]  ipoib_start_xmit+0x2a9/0x2d0 [ib_ipoib]\\n[ 1081.046978]  dev_hard_start_xmit+0xc4/0x210\\n--\\n[ 1081.148347]  __sys_sendmsg+0x59/0xa0\\n\\ncrash\u003e ipoib_txreq 0xffff9cfeba229f00\\nstruct ipoib_txreq {\\n  txreq = {\\n    list = {\\n      next = 0xffff9cfeba229f00,\\n      prev = 0xffff9cfeba229f00\\n    },\\n    descp = 0xffff9cfeba229f40,\\n    coalesce_buf = 0x0,\\n    wait = 0xffff9cfea4e69a48,\\n    complete = 0xffffffffc0fe0760 \u003chfi1_ipoib_sdma_complete\u003e,\\n    packet_len = 0x46d,\\n    tlen = 0x0,\\n    num_desc = 0x0,\\n    desc_limit = 0x6,\\n    next_descq_idx = 0x45c,\\n    coalesce_idx = 0x0,\\n    flags = 0x0,\\n    descs = {{\\n        qw = {0x8024000120dffb00, 0x4}  # SDMA_DESC0_FIRST_DESC_FLAG (bit 63)\\n      }, {\\n        qw = {  0x3800014231b108, 0x4}\\n      }, {\\n        qw = { 0x310000e4ee0fcf0, 0x8}\\n      }, {\\n        qw = {  0x3000012e9f8000, 0x8}\\n      }, {\\n        qw = {  0x59000dfb9d0000, 0x8}\\n      }, {\\n        qw = {  0x78000e02e40000, 0x8}\\n      }}\\n  },\\n  sdma_hdr =  0x400300015528b000,  \u003c\u003c\u003c invalid pointer in the tx request structure\\n  sdma_status = 0x0,                   SDMA_DESC0_LAST_DESC_FLAG (bit 62)\\n  complete = 0x0,\\n  priv = 0x0,\\n  txq = 0xffff9cfea4e69880,\\n  skb = 0xffff9d099809f400\\n}\\n\\nIf an SDMA send consists of exactly 6 descriptors and requires dword\\npadding (in the 7th descriptor), the sdma_txreq descriptor array is not\\nproperly expanded and the packet will overflow into the container\\nstructure. This results in a panic when the send completion runs. The\\nexact panic varies depending on what elements of the container structure\\nget corrupted. The fix is to use the correct expression in\\n_pad_sdma_tx_descs() to test the need to expand the descriptor array.\\n\\nWith this patch the crashes are no longer reproducible and the machine is\\nstable.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: IB/hfi1: Corrija el error sdma.h tx-\u0026gt;num_descs off-by-one Desafortunadamente, el commit `fd8958efe877` introdujo otro error que provoc\u00f3 que la matriz `descs` se desbordara. Esto da como resultado m\u00e1s fallas f\u00e1cilmente reproducibles mediante la llamada al SYSTEM \\\"sendmsg\\\". [ 1080.836473] falla de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0x400300015528b00a: 0000 [#1] PREEMPT SMP PTI [ 1080.869326] RIP: 0010:hfi1_ipoib_build_ib_tx_headers.constprop.0+0xe1/0x2b0 [hfi1] -- [1080.974535] Seguimiento de llamadas: [ 1080.976990]  [ 1081.021929] hfi1_ipoib_send_dma_common+0x7a/0x2e0 [hfi1] [ 1081.027364] hfi1_ipoib_send_dma_list+0x62/0x270 [hfi1] [ 1081.032633] h fi1_ipoib_send+0x112/0x300 [hfi1] [ 1081.042001] ipoib_start_xmit+0x2a9/0x2d0 [ib_ipoib] [ 1081.046978] dev_hard_start_xmit+0xc4/0x210 -- [ 1081.148347] __sys_sendmsg+0x59/0xa0 crash\u0026gt; ipoib_txreq 0xffff9cfeba229f00 struct ipoib_txreq { txreq = { list = { next = 0xffff9cfe ba229f00, anterior = 0xffff9cfeba229f00}, descp = 0xffff9cfeba229f40, coalesce_buf = 0x0, espera = 0xffff9cfea4e69a48, completo = 0xffffffffc0fe0760 , paquete_len = 0x46d, tlen = 0x0, num_desc = 0x0, desc_limit = 0x6, next_descq_idx = 0x45c, coalesce_idx = 0x0, banderas = 0x0 , descs = {{ qw = {0x8024000120dffb00, 0x4} # SDMA_DESC0_FIRST_DESC_FLAG (bit 63) }, { qw = { 0x3800014231b108, 0x4} }, { qw = { 0x310000e4ee0fcf0, 0x8} }, { qw = { 0x3000012e9f8000, 0x8} }, { qw = { 0x59000dfb9d0000, 0x8} }, { qw = { 0x78000e02e40000, 0x8} }} }, sdma_hdr = 0x400300015528b000, \u0026lt;\u0026lt;\u0026lt; puntero no v\u00e1lido en la estructura de solicitud de tx sdma_status = 0x0, SDMA_DESC0_LAST_DESC_FLAG (bit 62) completo = 0x0, priv = 0x0, txq = 0xffff9cfea4e69880, skb = 0xffff9d099809f400 } Si es un SDMA send consta de exactamente 6 descriptores y requiere relleno de dword (en el s\u00e9ptimo descriptor), la matriz de descriptores sdma_txreq no se expande adecuadamente y el paquete se desbordar\u00e1 hacia la estructura del contenedor. Esto produce p\u00e1nico cuando se ejecuta la finalizaci\u00f3n del env\u00edo. El p\u00e1nico exacto var\u00eda dependiendo de qu\u00e9 elementos de la estructura del contenedor se corrompen. La soluci\u00f3n es utilizar la expresi\u00f3n correcta en _pad_sdma_tx_descs() para probar la necesidad de expandir la matriz de descriptores. Con este parche los fallos ya no son reproducibles y la m\u00e1quina est\u00e1 estable.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/115b7f3bc1dce590a6851a2dcf23dc1100c49790\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f38d22e645e2e994979426ea5a35186102ff3c2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/47ae64df23ed1318e27bd9844e135a5e1c0e6e39\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/52dc9a7a573dbf778625a0efca0fca55489f084b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5833024a9856f454a964a198c63a57e59e07baf5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9034a1bec35e9f725315a3bb6002ef39666114d9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a2fef1d81becf4ff60e1a249477464eae3c3bc2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e6f57c6881916df39db7d95981a8ad2b9c3458d6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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