| { |
| "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/64s: fix program check interrupt emergency stack path\n\nEmergency stack path was jumping into a 3: label inside the\n__GEN_COMMON_BODY macro for the normal path after it had finished,\nrather than jumping over it. By a small miracle this is the correct\nplace to build up a new interrupt frame with the existing stack\npointer, so things basically worked okay with an added weird looking\n700 trap frame on top (which had the wrong ->nip so it didn't decode\nbug messages either).\n\nFix this by avoiding using numeric labels when jumping over non-trivial\nmacros.\n\nBefore:\n\n LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV\n Modules linked in:\n CPU: 0 PID: 88 Comm: sh Not tainted 5.15.0-rc2-00034-ge057cdade6e5 #2637\n NIP: 7265677368657265 LR: c00000000006c0c8 CTR: c0000000000097f0\n REGS: c0000000fffb3a50 TRAP: 0700 Not tainted\n MSR: 9000000000021031 <SF,HV,ME,IR,DR,LE> CR: 00000700 XER: 20040000\n CFAR: c0000000000098b0 IRQMASK: 0\n GPR00: c00000000006c964 c0000000fffb3cf0 c000000001513800 0000000000000000\n GPR04: 0000000048ab0778 0000000042000000 0000000000000000 0000000000001299\n GPR08: 000001e447c718ec 0000000022424282 0000000000002710 c00000000006bee8\n GPR12: 9000000000009033 c0000000016b0000 00000000000000b0 0000000000000001\n GPR16: 0000000000000000 0000000000000002 0000000000000000 0000000000000ff8\n GPR20: 0000000000001fff 0000000000000007 0000000000000080 00007fff89d90158\n GPR24: 0000000002000000 0000000002000000 0000000000000255 0000000000000300\n GPR28: c000000001270000 0000000042000000 0000000048ab0778 c000000080647e80\n NIP [7265677368657265] 0x7265677368657265\n LR [c00000000006c0c8] ___do_page_fault+0x3f8/0xb10\n Call Trace:\n [c0000000fffb3cf0] [c00000000000bdac] soft_nmi_common+0x13c/0x1d0 (unreliable)\n --- interrupt: 700 at decrementer_common_virt+0xb8/0x230\n NIP: c0000000000098b8 LR: c00000000006c0c8 CTR: c0000000000097f0\n REGS: c0000000fffb3d60 TRAP: 0700 Not tainted\n MSR: 9000000000021031 <SF,HV,ME,IR,DR,LE> CR: 22424282 XER: 20040000\n CFAR: c0000000000098b0 IRQMASK: 0\n GPR00: c00000000006c964 0000000000002400 c000000001513800 0000000000000000\n GPR04: 0000000048ab0778 0000000042000000 0000000000000000 0000000000001299\n GPR08: 000001e447c718ec 0000000022424282 0000000000002710 c00000000006bee8\n GPR12: 9000000000009033 c0000000016b0000 00000000000000b0 0000000000000001\n GPR16: 0000000000000000 0000000000000002 0000000000000000 0000000000000ff8\n GPR20: 0000000000001fff 0000000000000007 0000000000000080 00007fff89d90158\n GPR24: 0000000002000000 0000000002000000 0000000000000255 0000000000000300\n GPR28: c000000001270000 0000000042000000 0000000048ab0778 c000000080647e80\n NIP [c0000000000098b8] decrementer_common_virt+0xb8/0x230\n LR [c00000000006c0c8] ___do_page_fault+0x3f8/0xb10\n --- interrupt: 700\n Instruction dump:\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n ---[ end trace 6d28218e0cc3c949 ]---\n\nAfter:\n\n ------------[ cut here ]------------\n kernel BUG at arch/powerpc/kernel/exceptions-64s.S:491!\n Oops: Exception in kernel mode, sig: 5 [#1]\n LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV\n Modules linked in:\n CPU: 0 PID: 88 Comm: login Not tainted 5.15.0-rc2-00034-ge057cdade6e5-dirty #2638\n NIP: c0000000000098b8 LR: c00000000006bf04 CTR: c0000000000097f0\n REGS: c0000000fffb3d60 TRAP: 0700 Not tainted\n MSR: 9000000000021031 <SF,HV,ME,IR,DR,LE> CR: 24482227 XER: 00040000\n CFAR: c0000000000098b0 IRQMASK: 0\n GPR00: c00000000006bf04 0000000000002400 c000000001513800 c000000001271868\n GPR04: 00000000100f0d29 0000000042000000 0000000000000007 0000000000000009\n GPR08: 00000000100f0d29 0000000024482227 0000000000002710 c000000000181b3c\n GPR12: 9000000000009033 c0000000016b0000 00000000100f0d29 c000000005b22f00\n GPR16: 00000000ffff0000 0000000000000001 0000000000000009 00000000100eed90\n GPR20: 00000000100eed90 00000\n---truncated---" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "arch/powerpc/kernel/exceptions-64s.S" |
| ], |
| "versions": [ |
| { |
| "version": "0a882e28468f48ab3d9a36dde0a5723ea29ed1ed", |
| "lessThan": "411b38fe68ba20a8bbe724b0939762c3f16e16ca", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "0a882e28468f48ab3d9a36dde0a5723ea29ed1ed", |
| "lessThan": "c835b3d1d6362b4a4ebb192da7e7fd27a0a45d01", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "0a882e28468f48ab3d9a36dde0a5723ea29ed1ed", |
| "lessThan": "3e607dc4df180b72a38e75030cb0f94d12808712", |
| "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/kernel/exceptions-64s.S" |
| ], |
| "versions": [ |
| { |
| "version": "5.3", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.3", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.73", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.14.12", |
| "lessThanOrEqual": "5.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15", |
| "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": "5.3", |
| "versionEndExcluding": "5.10.73" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.3", |
| "versionEndExcluding": "5.14.12" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.3", |
| "versionEndExcluding": "5.15" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/411b38fe68ba20a8bbe724b0939762c3f16e16ca" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c835b3d1d6362b4a4ebb192da7e7fd27a0a45d01" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/3e607dc4df180b72a38e75030cb0f94d12808712" |
| } |
| ], |
| "title": "powerpc/64s: fix program check interrupt emergency stack path", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47428", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
