2024-02-19 15:02:13 +00:00
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{
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2024-04-03 18:00:35 +00:00
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"data_version": "4.0",
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2024-02-19 15:02:13 +00:00
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2024-26768",
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2024-04-03 18:00:35 +00:00
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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2024-02-19 15:02:13 +00:00
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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2024-04-03 18:00:35 +00:00
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"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"
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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2024-11-29 11:00:34 +00:00
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"version_name": "fa96b57c1490",
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2024-04-03 18:00:35 +00:00
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"version_value": "88e189bd16e5"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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2024-11-29 11:00:34 +00:00
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{
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"version": "5.19",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.19",
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"status": "unaffected",
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"versionType": "semver"
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},
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2024-04-03 18:00:35 +00:00
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{
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"version": "6.6.19",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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2024-11-05 10:01:30 +00:00
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"versionType": "semver"
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2024-04-03 18:00:35 +00:00
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},
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{
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"version": "6.7.7",
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"lessThanOrEqual": "6.7.*",
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"status": "unaffected",
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2024-11-05 10:01:30 +00:00
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"versionType": "semver"
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2024-04-03 18:00:35 +00:00
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},
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{
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"version": "6.8",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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],
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"defaultStatus": "affected"
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}
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/88e189bd16e5889e44a41b3309558ebab78b9280",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/88e189bd16e5889e44a41b3309558ebab78b9280"
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},
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{
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"url": "https://git.kernel.org/stable/c/0f6810e39898af2d2cabd9313e4dbc945fb5dfdd",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/0f6810e39898af2d2cabd9313e4dbc945fb5dfdd"
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},
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{
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"url": "https://git.kernel.org/stable/c/4551b30525cf3d2f026b92401ffe241eb04dfebe",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/4551b30525cf3d2f026b92401ffe241eb04dfebe"
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2024-02-19 15:02:13 +00:00
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}
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]
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2024-04-03 18:00:35 +00:00
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},
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"generator": {
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2024-11-29 11:00:34 +00:00
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"engine": "bippy-8e903de6a542"
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2024-02-19 15:02:13 +00:00
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}
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}
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