cve-2024-35968
Vulnerability from cvelistv5
Published
2024-05-20 09:41
Modified
2025-03-06 15:23
Severity ?
EPSS score ?
0.05% (0.12472)
Summary
In the Linux kernel, the following vulnerability has been resolved: pds_core: Fix pdsc_check_pci_health function to use work thread When the driver notices fw_status == 0xff it tries to perform a PCI reset on itself via pci_reset_function() in the context of the driver's health thread. However, pdsc_reset_prepare calls pdsc_stop_health_thread(), which attempts to stop/flush the health thread. This results in a deadlock because the stop/flush will never complete since the driver called pci_reset_function() from the health thread context. Fix by changing the pdsc_check_pci_health_function() to queue a newly introduced pdsc_pci_reset_thread() on the pdsc's work queue. Unloading the driver in the fw_down/dead state uncovered another issue, which can be seen in the following trace: WARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 __queue_work+0x358/0x440 [...] RIP: 0010:__queue_work+0x358/0x440 [...] Call Trace: <TASK> ? __warn+0x85/0x140 ? __queue_work+0x358/0x440 ? report_bug+0xfc/0x1e0 ? handle_bug+0x3f/0x70 ? exc_invalid_op+0x17/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? __queue_work+0x358/0x440 queue_work_on+0x28/0x30 pdsc_devcmd_locked+0x96/0xe0 [pds_core] pdsc_devcmd_reset+0x71/0xb0 [pds_core] pdsc_teardown+0x51/0xe0 [pds_core] pdsc_remove+0x106/0x200 [pds_core] pci_device_remove+0x37/0xc0 device_release_driver_internal+0xae/0x140 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xa0 pdsc_cleanup_module+0x10/0x780 [pds_core] __x64_sys_delete_module+0x142/0x2b0 ? syscall_trace_enter.isra.18+0x126/0x1a0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fbd9d03a14b [...] Fix this by preventing the devcmd reset if the FW is not running.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38407914d48273d7f8ab765b9243658afe1c3ab6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/81665adf25d28a00a986533f1d3a5df76b79cad9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/38407914d48273d7f8ab765b9243658afe1c3ab6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/81665adf25d28a00a986533f1d3a5df76b79cad9Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1e18ec3e9d46e4ad2b6507c3bfc7f59e2ab449a2
Version: 1e18ec3e9d46e4ad2b6507c3bfc7f59e2ab449a2
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   Linux Linux Version: 6.7
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      cveId: "CVE-2024-35968",
      datePublished: "2024-05-20T09:41:57.162Z",
      dateReserved: "2024-05-17T13:50:33.140Z",
      dateUpdated: "2025-03-06T15:23:53.625Z",
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Fix by changing the pdsc_check_pci_health_function()\\nto queue a newly introduced pdsc_pci_reset_thread() on the pdsc's\\nwork queue.\\n\\nUnloading the driver in the fw_down/dead state uncovered another issue,\\nwhich can be seen in the following trace:\\n\\nWARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 __queue_work+0x358/0x440\\n[...]\\nRIP: 0010:__queue_work+0x358/0x440\\n[...]\\nCall Trace:\\n <TASK>\\n ? __warn+0x85/0x140\\n ? __queue_work+0x358/0x440\\n ? report_bug+0xfc/0x1e0\\n ? handle_bug+0x3f/0x70\\n ? exc_invalid_op+0x17/0x70\\n ? asm_exc_invalid_op+0x1a/0x20\\n ? __queue_work+0x358/0x440\\n queue_work_on+0x28/0x30\\n pdsc_devcmd_locked+0x96/0xe0 [pds_core]\\n pdsc_devcmd_reset+0x71/0xb0 [pds_core]\\n pdsc_teardown+0x51/0xe0 [pds_core]\\n pdsc_remove+0x106/0x200 [pds_core]\\n pci_device_remove+0x37/0xc0\\n device_release_driver_internal+0xae/0x140\\n driver_detach+0x48/0x90\\n bus_remove_driver+0x6d/0xf0\\n pci_unregister_driver+0x2e/0xa0\\n pdsc_cleanup_module+0x10/0x780 [pds_core]\\n __x64_sys_delete_module+0x142/0x2b0\\n ? syscall_trace_enter.isra.18+0x126/0x1a0\\n do_syscall_64+0x3b/0x90\\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\\nRIP: 0033:0x7fbd9d03a14b\\n[...]\\n\\nFix this by preventing the devcmd reset if the FW is not running.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pds_core: corrige la función pdsc_check_pci_health para usar el subproceso de trabajo. Cuando el controlador nota fw_status == 0xff, intenta realizar un restablecimiento de PCI sobre sí mismo a través de pci_reset_function() en el contexto del subproceso de estado del controlador. . Sin embargo, pdsc_reset_prepare llama a pdsc_stop_health_thread(), que intenta detener/vaciar el hilo de salud. Esto da como resultado un punto muerto porque la parada/vaciado nunca se completará ya que el controlador llamó a pci_reset_function() desde el contexto del hilo de salud. Para solucionarlo, cambie pdsc_check_pci_health_function() para poner en cola un pdsc_pci_reset_thread() recién introducido en la cola de trabajo del pdsc. La descarga del controlador en el estado fw_down/dead descubrió otro problema, que se puede ver en el siguiente seguimiento: ADVERTENCIA: CPU: 51 PID: 6914 en kernel/workqueue.c:1450 __queue_work+0x358/0x440 [...] RIP: 0010:__queue_work+0x358/0x440 [...] Seguimiento de llamadas: ? __warn+0x85/0x140 ? __queue_work+0x358/0x440? report_bug+0xfc/0x1e0? handle_bug+0x3f/0x70? exc_invalid_op+0x17/0x70? asm_exc_invalid_op+0x1a/0x20? __queue_work+0x358/0x440 queue_work_on+0x28/0x30 pdsc_devcmd_locked+0x96/0xe0 [pds_core] pdsc_devcmd_reset+0x71/0xb0 [pds_core] pdsc_teardown+0x51/0xe0 [pds_core] pdsc_remove+0x106/0x200 [pds_core] pci_device_remove+0x37/0xc0 device_release_driver_internal+0xae /0x140 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xa0 pdsc_cleanup_module+0x10/0x780 [pds_core] __x64_sys_delete_module+0x142/0x2b0 ? syscall_trace_enter.isra.18+0x126/0x1a0 do_syscall_64+0x3b/0x90 Entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fbd9d03a14b [...] Solucione este problema evitando que devcmd se reinicie si el FW no se está ejecutando.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.16\",\"versionEndExcluding\":\"6.7\",\"matchCriteriaId\":\"CA039DA0-F81C-49F2-8BC2-CBBCF83EE6A4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7.4\",\"versionEndExcluding\":\"6.8.7\",\"matchCriteriaId\":\"DA814412-CD30-4333-AA23-FB18D865BFD6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/38407914d48273d7f8ab765b9243658afe1c3ab6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/81665adf25d28a00a986533f1d3a5df76b79cad9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/38407914d48273d7f8ab765b9243658afe1c3ab6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/81665adf25d28a00a986533f1d3a5df76b79cad9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
      vulnrichment: {
         containers: "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/38407914d48273d7f8ab765b9243658afe1c3ab6\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/81665adf25d28a00a986533f1d3a5df76b79cad9\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T03:21:49.041Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-35968\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-21T15:11:50.638119Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:25.167Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"pds_core: Fix pdsc_check_pci_health function to use work thread\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1e18ec3e9d46e4ad2b6507c3bfc7f59e2ab449a2\", \"lessThan\": \"38407914d48273d7f8ab765b9243658afe1c3ab6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e18ec3e9d46e4ad2b6507c3bfc7f59e2ab449a2\", \"lessThan\": \"81665adf25d28a00a986533f1d3a5df76b79cad9\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/amd/pds_core/core.c\", \"drivers/net/ethernet/amd/pds_core/core.h\", \"drivers/net/ethernet/amd/pds_core/dev.c\", \"drivers/net/ethernet/amd/pds_core/main.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.8.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/amd/pds_core/core.c\", \"drivers/net/ethernet/amd/pds_core/core.h\", \"drivers/net/ethernet/amd/pds_core/dev.c\", \"drivers/net/ethernet/amd/pds_core/main.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/38407914d48273d7f8ab765b9243658afe1c3ab6\"}, {\"url\": \"https://git.kernel.org/stable/c/81665adf25d28a00a986533f1d3a5df76b79cad9\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npds_core: Fix pdsc_check_pci_health function to use work thread\\n\\nWhen the driver notices fw_status == 0xff it tries to perform a PCI\\nreset on itself via pci_reset_function() in the context of the driver's\\nhealth thread. However, pdsc_reset_prepare calls\\npdsc_stop_health_thread(), which attempts to stop/flush the health\\nthread. This results in a deadlock because the stop/flush will never\\ncomplete since the driver called pci_reset_function() from the health\\nthread context. Fix by changing the pdsc_check_pci_health_function()\\nto queue a newly introduced pdsc_pci_reset_thread() on the pdsc's\\nwork queue.\\n\\nUnloading the driver in the fw_down/dead state uncovered another issue,\\nwhich can be seen in the following trace:\\n\\nWARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 __queue_work+0x358/0x440\\n[...]\\nRIP: 0010:__queue_work+0x358/0x440\\n[...]\\nCall Trace:\\n <TASK>\\n ? __warn+0x85/0x140\\n ? __queue_work+0x358/0x440\\n ? report_bug+0xfc/0x1e0\\n ? handle_bug+0x3f/0x70\\n ? exc_invalid_op+0x17/0x70\\n ? asm_exc_invalid_op+0x1a/0x20\\n ? __queue_work+0x358/0x440\\n queue_work_on+0x28/0x30\\n pdsc_devcmd_locked+0x96/0xe0 [pds_core]\\n pdsc_devcmd_reset+0x71/0xb0 [pds_core]\\n pdsc_teardown+0x51/0xe0 [pds_core]\\n pdsc_remove+0x106/0x200 [pds_core]\\n pci_device_remove+0x37/0xc0\\n device_release_driver_internal+0xae/0x140\\n driver_detach+0x48/0x90\\n bus_remove_driver+0x6d/0xf0\\n pci_unregister_driver+0x2e/0xa0\\n pdsc_cleanup_module+0x10/0x780 [pds_core]\\n __x64_sys_delete_module+0x142/0x2b0\\n ? syscall_trace_enter.isra.18+0x126/0x1a0\\n do_syscall_64+0x3b/0x90\\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\\nRIP: 0033:0x7fbd9d03a14b\\n[...]\\n\\nFix this by preventing the devcmd reset if the FW is not running.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-03-06T15:23:53.625Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2024-35968\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-06T15:23:53.625Z\", \"dateReserved\": \"2024-05-17T13:50:33.140Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-20T09:41:57.162Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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