{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-03T20:06:17.001","vulnerabilities":[{"cve":{"id":"CVE-2024-26768","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-04-03T17:15:52.800","lastModified":"2025-04-04T14:19:41.900","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Change acpi_core_pic[NR_CPUS] to acpi_core_pic[MAX_CORE_PIC]\n\nWith default config, the value of NR_CPUS is 64. When HW platform has\nmore then 64 cpus, system will crash on these platforms. MAX_CORE_PIC\nis the maximum cpu number in MADT table (max physical number) which can\nexceed the supported maximum cpu number (NR_CPUS, max logical number),\nbut kernel should not crash. Kernel should boot cpus with NR_CPUS, let\nthe remainder cpus stay in BIOS.\n\nThe potential crash reason is that the array acpi_core_pic[NR_CPUS] can\nbe overflowed when parsing MADT table, and it is obvious that CORE_PIC\nshould be corresponding to physical core rather than logical core, so it\nis better to define the array as acpi_core_pic[MAX_CORE_PIC].\n\nWith the patch, system can boot up 64 vcpus with qemu parameter -smp 128,\notherwise system will crash with the following message.\n\n[    0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000420000004259, era == 90000000037a5f0c, ra == 90000000037a46ec\n[    0.000000] Oops[#1]:\n[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.8.0-rc2+ #192\n[    0.000000] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022\n[    0.000000] pc 90000000037a5f0c ra 90000000037a46ec tp 9000000003c90000 sp 9000000003c93d60\n[    0.000000] a0 0000000000000019 a1 9000000003d93bc0 a2 0000000000000000 a3 9000000003c93bd8\n[    0.000000] a4 9000000003c93a74 a5 9000000083c93a67 a6 9000000003c938f0 a7 0000000000000005\n[    0.000000] t0 0000420000004201 t1 0000000000000000 t2 0000000000000001 t3 0000000000000001\n[    0.000000] t4 0000000000000003 t5 0000000000000000 t6 0000000000000030 t7 0000000000000063\n[    0.000000] t8 0000000000000014 u0 ffffffffffffffff s9 0000000000000000 s0 9000000003caee98\n[    0.000000] s1 90000000041b0480 s2 9000000003c93da0 s3 9000000003c93d98 s4 9000000003c93d90\n[    0.000000] s5 9000000003caa000 s6 000000000a7fd000 s7 000000000f556b60 s8 000000000e0a4330\n[    0.000000]    ra: 90000000037a46ec platform_init+0x214/0x250\n[    0.000000]   ERA: 90000000037a5f0c efi_runtime_init+0x30/0x94\n[    0.000000]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)\n[    0.000000]  PRMD: 00000000 (PPLV0 -PIE -PWE)\n[    0.000000]  EUEN: 00000000 (-FPE -SXE -ASXE -BTE)\n[    0.000000]  ECFG: 00070800 (LIE=11 VS=7)\n[    0.000000] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)\n[    0.000000]  BADV: 0000420000004259\n[    0.000000]  PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)\n[    0.000000] Modules linked in:\n[    0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____))\n[    0.000000] Stack : 9000000003c93a14 9000000003800898 90000000041844f8 90000000037a46ec\n[    0.000000]         000000000a7fd000 0000000008290000 0000000000000000 0000000000000000\n[    0.000000]         0000000000000000 0000000000000000 00000000019d8000 000000000f556b60\n[    0.000000]         000000000a7fd000 000000000f556b08 9000000003ca7700 9000000003800000\n[    0.000000]         9000000003c93e50 9000000003800898 9000000003800108 90000000037a484c\n[    0.000000]         000000000e0a4330 000000000f556b60 000000000a7fd000 000000000f556b08\n[    0.000000]         9000000003ca7700 9000000004184000 0000000000200000 000000000e02b018\n[    0.000000]         000000000a7fd000 90000000037a0790 9000000003800108 0000000000000000\n[    0.000000]         0000000000000000 000000000e0a4330 000000000f556b60 000000000a7fd000\n[    0.000000]         000000000f556b08 000000000eaae298 000000000eaa5040 0000000000200000\n[    0.000000]         ...\n[    0.000000] Call Trace:\n[    0.000000] [<90000000037a5f0c>] efi_runtime_init+0x30/0x94\n[    0.000000] [<90000000037a46ec>] platform_init+0x214/0x250\n[    0.000000] [<90000000037a484c>] setup_arch+0x124/0x45c\n[    0.000000] [<90000000037a0790>] start_kernel+0x90/0x670\n[    0.000000] [<900000000378b0d8>] kernel_entry+0xd8/0xdc"},{"lang":"es","value":"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: LoongArch: cambie acpi_core_pic[NR_CPUS] a acpi_core_pic[MAX_CORE_PIC] Con la configuración predeterminada, el valor de NR_CPUS es 64. Cuando la plataforma HW tiene más de 64 cpus, el SYSTEM fallará en estas plataformas . MAX_CORE_PIC es el número máximo de CPU en la tabla MADT (número físico máximo) que puede exceder el número máximo de CPU admitido (NR_CPUS, número lógico máximo), pero el kernel no debería fallar. El kernel debe arrancar los procesadores con NR_CPUS y dejar que los procesadores restantes permanezcan en el BIOS. La posible razón del fallo es que la matriz acpi_core_pic[NR_CPUS] puede desbordarse al analizar la tabla MADT, y es obvio que CORE_PIC debe corresponder al núcleo físico en lugar del núcleo lógico, por lo que es mejor definir la matriz como acpi_core_pic[MAX_CORE_PIC] . Con el parche, el SYSTEM puede iniciar 64 vcpus con el parámetro qemu -smp 128; de lo contrario, el SYSTEM fallará con el siguiente mensaje. [ 0.000000] CPU 0 No se puede manejar la solicitud de paginación del kernel en la dirección virtual 0000420000004259, era == 90000000037a5f0c, ra == 90000000037a46ec [ 0.000000] Ups[#1]: [ 0.000000] CPU: 0 PID: 0 Comm: intercambiador No contaminado 6.8. 0-rc2+ #192 [0.000000] Nombre de hardware: QEMU QEMU Máquina virtual, BIOS desconocido 2/2/2022 [0.000000] pc 90000000037a5f0c ra 90000000037a46ec tp 9000000003c90000 sp 9000000003c93 d60 [ 0.000000] a0 0000000000000019 a1 9000000003d93bc0 a2 0000000000000000 a3 9000000003c93bd8 [ 0.000000] a4 9000000003c93a74 a5 9000000083c93a67 a6 9000000003c938f0 a7 0000000000000005 [ 0.000000] t0 0000420000004201 t1 00000000000000000 t2 0000000000000000 1 t3 0000000000000001 [ 0,000000] t4 0000000000000003 t5 0000000000000000 t6 0000000000000030 t7 0000000000000063 [ 0,000000] t8 0000 000000000014 u0 ffffffffffffffff s9 0000000000000000 s0 9000000003caee98 [ 0.000000] s1 90000000041b0480 s2 9000000003c93da0 s3 9000000003 c93d98 s4 9000000003c93d90 [ 0.000000] s5 9000000003caa000 s6 000000000a7fd000 s7 000000000f556b60 s8 000000000e0a4330 [ 0.000000] ra: 90000000037a46ec platform_init+ 0x214/0x250 [ 0.000000] ERA: 90000000037a5f0c efi_runtime_init+0x30/0x94 [ 0.000000] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE) [ 0.000000] PRMD: 00000000 (PPLV0 -PIE -PWE) [ 0.000000] EUEN: 00000000 (-FPE -SXE -ASXE -BTE) [ 0.000000] ECFG: 00070800 (LIE=11 VS=7) [ 0.000000] ESTAT: 00010000 [PIL] (IS= ECode=1 EssubCode=0) [ 0.000000] BADV: 0000420000004259 [ 0.000000] PRID: 0014c010 (Loongson-64bit, Loongson-3A5000) [ 0.0000 00] Módulos vinculados en: [ 0.000000] Proceso swapper (pid: 0, threadinfo=(____ptrval____), tarea=(____ptrval____)) [0.000000] Pila: 9000000003c93a14 9000000003800898 90000000041844f8 90000000037a46ec [0.000000] 000000000a7fd000 0000000008290000 0000000000000000 0000000000000000 [ 0.000000] 00000000000000000 0000000000000000 00000000019d 8000 000000000f556b60 [ 0,000000] 000000000a7fd000 000000000f556b08 9000000003ca7700 9000000003800000 [ 0,000000 ] 9000000003c93e50 9000000003800898 9000000003800108 90000000037a484c [ 0.000000] 000000000e0a4330 000000000f556b60 00000000 0a7fd000 000000000f556b08 [ 0.000000] 9000000003ca7700 9000000004184000 0000000000200000 000000000e02b018 [ 0.000000] 000000000a 7fd000 90000000037a0790 9000000003800108 0000000000000000 [ 0.000000] 00000000000000000 000000000e0a4330 000000000f556b60 00000 0000a7fd000 [ 0.000000] 000000000f556b08 000000000eaae298 000000000eaa5040 0000000000200000 [ 0.000000] ... [ 0.000000] Llamar Seguimiento: [ 0.000000] [&lt;90000000037a5f0c&gt;] efi_runtime_init+0x30/0x94 [ 0.000000] [&lt;90000000037a46ec&gt;] platform_init+0x214/0x250 [ 0.000000] [&lt;90000000037a48 4c&gt;] setup_arch+0x124/0x45c [ 0.000000] [&lt;90000000037a0790&gt;] start_kernel +0x90/0x670 [ 0.000000] [&lt;900000000378b0d8&gt;] entrada_kernel+0xd8/0xdc"}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.0,"impactScore":4.0}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-120"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.19","matchCriteriaId":"296B2324-E9B8-417F-A82B-B8C508688E14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.7.7","matchCriteriaId":"575EE16B-67F2-4B5B-B5F8-1877715C898B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*","matchCriteriaId":"B9F4EA73-0894-400F-A490-3A397AB7A517"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*","matchCriteriaId":"056BD938-0A27-4569-B391-30578B309EE3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*","matchCriteriaId":"F02056A5-B362-4370-9FF8-6F0BD384D520"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0f6810e39898af2d2cabd9313e4dbc945fb5dfdd","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4551b30525cf3d2f026b92401ffe241eb04dfebe","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/88e189bd16e5889e44a41b3309558ebab78b9280","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/0f6810e39898af2d2cabd9313e4dbc945fb5dfdd","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4551b30525cf3d2f026b92401ffe241eb04dfebe","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/88e189bd16e5889e44a41b3309558ebab78b9280","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}