| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.\n\nnmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel\ncrash when invoked during real mode interrupt handling (e.g. early HMI/MCE\ninterrupt handler) if percpu allocation comes from vmalloc area.\n\nEarly HMI/MCE handlers are called through DEFINE_INTERRUPT_HANDLER_NMI()\nwrapper which invokes nmi_enter/nmi_exit calls. We don't see any issue when\npercpu allocation is from the embedded first chunk. However with\nCONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK enabled there are chances where percpu\nallocation can come from the vmalloc area.\n\nWith kernel command line \"percpu_alloc=page\" we can force percpu allocation\nto come from vmalloc area and can see kernel crash in machine_check_early:\n\n[ 1.215714] NIP [c000000000e49eb4] rcu_nmi_enter+0x24/0x110\n[ 1.215717] LR [c0000000000461a0] machine_check_early+0xf0/0x2c0\n[ 1.215719] --- interrupt: 200\n[ 1.215720] [c000000fffd73180] [0000000000000000] 0x0 (unreliable)\n[ 1.215722] [c000000fffd731b0] [0000000000000000] 0x0\n[ 1.215724] [c000000fffd73210] [c000000000008364] machine_check_early_common+0x134/0x1f8\n\nFix this by avoiding use of nmi_enter()/nmi_exit() in real mode if percpu\nfirst chunk is not embedded." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "arch/powerpc/include/asm/interrupt.h", |
| "arch/powerpc/include/asm/percpu.h", |
| "arch/powerpc/kernel/setup_64.c" |
| ], |
| "versions": [ |
| { |
| "version": "eb553f16973ade990d05946af9ae191394712c8a", |
| "lessThan": "fb6675db04c4b79883373edc578d5df7bbc84848", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "eb553f16973ade990d05946af9ae191394712c8a", |
| "lessThan": "e2afb26615adf6c3ceaaa7732aa839bcd587a057", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "eb553f16973ade990d05946af9ae191394712c8a", |
| "lessThan": "8d3f83dfb23674540c827a8d65fba20aa300b252", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "eb553f16973ade990d05946af9ae191394712c8a", |
| "lessThan": "0f37946c62c48a907625348cbc720a7a0c547d1e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "eb553f16973ade990d05946af9ae191394712c8a", |
| "lessThan": "2c78c9411e685dbc9eac8c2845111b03501975b8", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "eb553f16973ade990d05946af9ae191394712c8a", |
| "lessThan": "0db880fc865ffb522141ced4bfa66c12ab1fbb70", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "arch/powerpc/include/asm/interrupt.h", |
| "arch/powerpc/include/asm/percpu.h", |
| "arch/powerpc/kernel/setup_64.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.10", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.10", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.224", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.165", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.98", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.39", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.9.9", |
| "lessThanOrEqual": "6.9.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.10", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.10", |
| "versionEndExcluding": "5.10.224" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.10", |
| "versionEndExcluding": "5.15.165" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.10", |
| "versionEndExcluding": "6.1.98" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.10", |
| "versionEndExcluding": "6.6.39" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.10", |
| "versionEndExcluding": "6.9.9" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.10", |
| "versionEndExcluding": "6.10" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/fb6675db04c4b79883373edc578d5df7bbc84848" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/e2afb26615adf6c3ceaaa7732aa839bcd587a057" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8d3f83dfb23674540c827a8d65fba20aa300b252" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0f37946c62c48a907625348cbc720a7a0c547d1e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2c78c9411e685dbc9eac8c2845111b03501975b8" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0db880fc865ffb522141ced4bfa66c12ab1fbb70" |
| } |
| ], |
| "title": "powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-42126", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
