227 lines
11 KiB
JSON
227 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-71102",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-01-13T15:30:19.651Z",
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"datePublished": "2026-01-14T15:05:52.389Z",
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"dateUpdated": "2026-05-11T21:54:47.227Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T21:54:47.227Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscs: fix a wrong parameter in __scs_magic\n\n__scs_magic() needs a 'void *' variable, but a 'struct task_struct *' is\ngiven. 'task_scs(tsk)' is the starting address of the task's shadow call\nstack, and '__scs_magic(task_scs(tsk))' is the end address of the task's\nshadow call stack. Here should be '__scs_magic(task_scs(tsk))'.\n\nThe user-visible effect of this bug is that when CONFIG_DEBUG_STACK_USAGE\nis enabled, the shadow call stack usage checking function\n(scs_check_usage) would scan an incorrect memory range. This could lead\n\n1. **Inaccurate stack usage reporting**: The function would calculate\n wrong usage statistics for the shadow call stack, potentially showing\n incorrect value in kmsg.\n\n2. **Potential kernel crash**: If the value of __scs_magic(tsk)is\n greater than that of __scs_magic(task_scs(tsk)), the for loop may\n access unmapped memory, potentially causing a kernel panic. However,\n this scenario is unlikely because task_struct is allocated via the slab\n allocator (which typically returns lower addresses), while the shadow\n call stack returned by task_scs(tsk) is allocated via vmalloc(which\n typically returns higher addresses).\n\nHowever, since this is purely a debugging feature\n(CONFIG_DEBUG_STACK_USAGE), normal production systems should be not\nunaffected. The bug only impacts developers and testers who are actively\ndebugging stack usage with this configuration enabled."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/scs.c"
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],
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"versions": [
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "1727e8bd69103a68963a5613a0ddb6d8d37df5d3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "cfdf6250b63b953b1d8e60814c8ca96c6f9d1c8c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "57ba40b001be27786d0570dd292289df748b306b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "062774439d442882b44f5eab8c256ad3423ef284",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "9ef28943471a16e4f9646bc3e8e2de148e7d8d7b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "a19fb3611e4c06624fc0f83ef19f4fb8d57d4751",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5bbaf9d1fcb9be696ee9a61636ab6803556c70f2",
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"lessThan": "08bd4c46d5e63b78e77f2605283874bbe868ab19",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/scs.c"
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],
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"versions": [
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{
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"version": "5.8",
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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": "5.8",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.248",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.198",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.160",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.120",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.64",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.3",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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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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}
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],
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"cpeApplicability": [
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "5.10.248"
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},
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"vulnerable": true,
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "6.19"
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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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{
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"url": "https://git.kernel.org/stable/c/1727e8bd69103a68963a5613a0ddb6d8d37df5d3"
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},
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{
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"url": "https://git.kernel.org/stable/c/cfdf6250b63b953b1d8e60814c8ca96c6f9d1c8c"
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},
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{
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"url": "https://git.kernel.org/stable/c/57ba40b001be27786d0570dd292289df748b306b"
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},
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{
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"url": "https://git.kernel.org/stable/c/062774439d442882b44f5eab8c256ad3423ef284"
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},
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{
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"url": "https://git.kernel.org/stable/c/9ef28943471a16e4f9646bc3e8e2de148e7d8d7b"
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},
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{
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"url": "https://git.kernel.org/stable/c/a19fb3611e4c06624fc0f83ef19f4fb8d57d4751"
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},
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{
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"url": "https://git.kernel.org/stable/c/08bd4c46d5e63b78e77f2605283874bbe868ab19"
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}
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],
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"title": "scs: fix a wrong parameter in __scs_magic",
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"x_generator": {
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} |