cve-2024-49927
Vulnerability from cvelistv5
Published
2024-10-21 18:01
Modified
2024-12-19 09:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: x86/ioapic: Handle allocation failures gracefully Breno observed panics when using failslab under certain conditions during runtime: can not alloc irq_pin_list (-1,0,20) Kernel panic - not syncing: IO-APIC: failed to add irq-pin. Can not proceed panic+0x4e9/0x590 mp_irqdomain_alloc+0x9ab/0xa80 irq_domain_alloc_irqs_locked+0x25d/0x8d0 __irq_domain_alloc_irqs+0x80/0x110 mp_map_pin_to_irq+0x645/0x890 acpi_register_gsi_ioapic+0xe6/0x150 hpet_open+0x313/0x480 That's a pointless panic which is a leftover of the historic IO/APIC code which panic'ed during early boot when the interrupt allocation failed. The only place which might justify panic is the PIT/HPET timer_check() code which tries to figure out whether the timer interrupt is delivered through the IO/APIC. But that code does not require to handle interrupt allocation failures. If the interrupt cannot be allocated then timer delivery fails and it either panics due to that or falls back to legacy mode. Cure this by removing the panic wrapper around __add_pin_to_irq_node() and making mp_irqdomain_alloc() aware of the failure condition and handle it as any other failure in this function gracefully.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/077e1b7cd521163ded545987bbbd389519aeed71Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/649a5c2ffae797ce792023a70e84c7fe4b6fb8e0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/830802a0fea8fb39d3dc9fb7d6b5581e1343eb1fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e479cb835feeb2abff97f25766e23b96a6eabe28Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec862cd843faa6f0e84a7a07362f2786446bf697Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f17efbeb2922327ea01a9efa8829fea9a30e547dPatch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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Can not proceed\\n\\n   panic+0x4e9/0x590\\n   mp_irqdomain_alloc+0x9ab/0xa80\\n   irq_domain_alloc_irqs_locked+0x25d/0x8d0\\n   __irq_domain_alloc_irqs+0x80/0x110\\n   mp_map_pin_to_irq+0x645/0x890\\n   acpi_register_gsi_ioapic+0xe6/0x150\\n   hpet_open+0x313/0x480\\n\\nThat\u0027s a pointless panic which is a leftover of the historic IO/APIC code\\nwhich panic\u0027ed during early boot when the interrupt allocation failed.\\n\\nThe only place which might justify panic is the PIT/HPET timer_check() code\\nwhich tries to figure out whether the timer interrupt is delivered through\\nthe IO/APIC. But that code does not require to handle interrupt allocation\\nfailures. If the interrupt cannot be allocated then timer delivery fails\\nand it either panics due to that or falls back to legacy mode.\\n\\nCure this by removing the panic wrapper around __add_pin_to_irq_node() and\\nmaking mp_irqdomain_alloc() aware of the failure condition and handle it as\\nany other failure in this function gracefully.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: x86/ioapic: Manejar errores de asignaci\u00f3n con elegancia Breno observ\u00f3 p\u00e1nicos al usar failslab bajo ciertas condiciones durante el tiempo de ejecuci\u00f3n: no se puede asignar irq_pin_list (-1,0,20) P\u00e1nico del kernel: no se sincroniza: IO-APIC: no se pudo agregar irq-pin. No se puede continuar panic+0x4e9/0x590 mp_irqdomain_alloc+0x9ab/0xa80 irq_domain_alloc_irqs_locked+0x25d/0x8d0 __irq_domain_alloc_irqs+0x80/0x110 mp_map_pin_to_irq+0x645/0x890 acpi_register_gsi_ioapic+0xe6/0x150 hpet_open+0x313/0x480 Ese es un p\u00e1nico sin sentido que es un remanente del c\u00f3digo IO/APIC hist\u00f3rico que entr\u00f3 en p\u00e1nico durante el arranque temprano cuando fall\u00f3 la asignaci\u00f3n de interrupci\u00f3n. El \u00fanico lugar que podr\u00eda justificar el p\u00e1nico es el c\u00f3digo timer_check() de PIT/HPET que intenta averiguar si la interrupci\u00f3n del temporizador se entrega a trav\u00e9s de IO/APIC. Pero ese c\u00f3digo no requiere manejar fallos de asignaci\u00f3n de interrupciones. Si no se puede asignar la interrupci\u00f3n, la entrega del temporizador fallo y entra en p\u00e1nico debido a eso o vuelve al modo heredado. Solucione esto eliminando el contenedor de p\u00e1nico alrededor de __add_pin_to_irq_node() y haciendo que mp_irqdomain_alloc() sea consciente de la condici\u00f3n de fallo y la maneje como cualquier otra fallo en esta funci\u00f3n de manera elegante.\"}],\"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\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.15.168\",\"matchCriteriaId\":\"F032D82B-5582-4DF5-B921-BFE0BD301364\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.113\",\"matchCriteriaId\":\"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.55\",\"matchCriteriaId\":\"E90B9576-56C4-47BC-AAB0-C5B2D438F5D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.14\",\"matchCriteriaId\":\"4C16BCE0-FFA0-4599-BE0A-1FD65101C021\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.3\",\"matchCriteriaId\":\"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/077e1b7cd521163ded545987bbbd389519aeed71\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/649a5c2ffae797ce792023a70e84c7fe4b6fb8e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/830802a0fea8fb39d3dc9fb7d6b5581e1343eb1f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e479cb835feeb2abff97f25766e23b96a6eabe28\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ec862cd843faa6f0e84a7a07362f2786446bf697\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f17efbeb2922327ea01a9efa8829fea9a30e547d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
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}


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