214 lines
11 KiB
JSON
214 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-2023-54267",
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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": "2025-12-30T12:06:44.518Z",
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"datePublished": "2025-12-30T12:15:58.914Z",
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"dateUpdated": "2026-05-11T19:58:40.112Z"
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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": "2026-05-11T19:58:40.112Z"
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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\npowerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT\n\nlppaca_shared_proc() takes a pointer to the lppaca which is typically\naccessed through get_lppaca(). With DEBUG_PREEMPT enabled, this leads\nto checking if preemption is enabled, for example:\n\n BUG: using smp_processor_id() in preemptible [00000000] code: grep/10693\n caller is lparcfg_data+0x408/0x19a0\n CPU: 4 PID: 10693 Comm: grep Not tainted 6.5.0-rc3 #2\n Call Trace:\n dump_stack_lvl+0x154/0x200 (unreliable)\n check_preemption_disabled+0x214/0x220\n lparcfg_data+0x408/0x19a0\n ...\n\nThis isn't actually a problem however, as it does not matter which\nlppaca is accessed, the shared proc state will be the same.\nvcpudispatch_stats_procfs_init() already works around this by disabling\npreemption, but the lparcfg code does not, erroring any time\n/proc/powerpc/lparcfg is accessed with DEBUG_PREEMPT enabled.\n\nInstead of disabling preemption on the caller side, rework\nlppaca_shared_proc() to not take a pointer and instead directly access\nthe lppaca, bypassing any potential preemption checks.\n\n[mpe: Rework to avoid needing a definition in paca.h and lppaca.h]"
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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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"arch/powerpc/include/asm/lppaca.h",
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"arch/powerpc/platforms/pseries/lpar.c",
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"arch/powerpc/platforms/pseries/lparcfg.c",
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"arch/powerpc/platforms/pseries/setup.c",
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"drivers/cpuidle/cpuidle-pseries.c"
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],
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"versions": [
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{
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"version": "f13c13a005127b5dc5daaca190277a062d946e63",
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"lessThan": "953c54dfdc5d3eb7243ed902b50acb5ea1db4355",
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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": "f13c13a005127b5dc5daaca190277a062d946e63",
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"lessThan": "2935443dc9c28499223d8c881474259e4b998f2a",
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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": "f13c13a005127b5dc5daaca190277a062d946e63",
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"lessThan": "4c8568cf4c45b415854195c8832b557cdefba57a",
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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": "f13c13a005127b5dc5daaca190277a062d946e63",
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"lessThan": "3c5e8e666794d7dde6d14ea846c6c04f2bb34900",
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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": "f13c13a005127b5dc5daaca190277a062d946e63",
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"lessThan": "f45ee5c074013a0fbfce77a5af5efddb01f5d4f4",
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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": "f13c13a005127b5dc5daaca190277a062d946e63",
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"lessThan": "eac030b22ea12cdfcbb2e941c21c03964403c63f",
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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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"arch/powerpc/include/asm/lppaca.h",
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"arch/powerpc/platforms/pseries/lpar.c",
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"arch/powerpc/platforms/pseries/lparcfg.c",
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"arch/powerpc/platforms/pseries/setup.c",
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"drivers/cpuidle/cpuidle-pseries.c"
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],
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"versions": [
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{
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"version": "3.12",
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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": "3.12",
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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": "5.10.195",
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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": "5.15.132",
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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": "6.1.53",
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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": "6.4.16",
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"lessThanOrEqual": "6.4.*",
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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": "6.5.3",
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"lessThanOrEqual": "6.5.*",
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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",
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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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{
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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": "3.12",
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"versionEndExcluding": "5.10.195"
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},
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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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"versionEndExcluding": "6.5.3"
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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/953c54dfdc5d3eb7243ed902b50acb5ea1db4355"
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},
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{
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"url": "https://git.kernel.org/stable/c/2935443dc9c28499223d8c881474259e4b998f2a"
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},
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{
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"url": "https://git.kernel.org/stable/c/4c8568cf4c45b415854195c8832b557cdefba57a"
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},
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{
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"url": "https://git.kernel.org/stable/c/3c5e8e666794d7dde6d14ea846c6c04f2bb34900"
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},
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{
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"url": "https://git.kernel.org/stable/c/f45ee5c074013a0fbfce77a5af5efddb01f5d4f4"
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},
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{
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"url": "https://git.kernel.org/stable/c/eac030b22ea12cdfcbb2e941c21c03964403c63f"
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}
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],
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"title": "powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT",
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