205 lines
11 KiB
JSON
205 lines
11 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2021-47414",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-05-21T14:58:30.818Z",
|
|
"datePublished": "2024-05-21T15:04:04.715Z",
|
|
"dateUpdated": "2026-05-11T13:54:14.639Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-05-11T13:54:14.639Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Flush current cpu icache before other cpus\n\nOn SiFive Unmatched, I recently fell onto the following BUG when booting:\n\n[ 0.000000] ftrace: allocating 36610 entries in 144 pages\n[ 0.000000] Oops - illegal instruction [#1]\n[ 0.000000] Modules linked in:\n[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.13.1+ #5\n[ 0.000000] Hardware name: SiFive HiFive Unmatched A00 (DT)\n[ 0.000000] epc : riscv_cpuid_to_hartid_mask+0x6/0xae\n[ 0.000000] ra : __sbi_rfence_v02+0xc8/0x10a\n[ 0.000000] epc : ffffffff80007240 ra : ffffffff80009964 sp : ffffffff81803e10\n[ 0.000000] gp : ffffffff81a1ea70 tp : ffffffff8180f500 t0 : ffffffe07fe30000\n[ 0.000000] t1 : 0000000000000004 t2 : 0000000000000000 s0 : ffffffff81803e60\n[ 0.000000] s1 : 0000000000000000 a0 : ffffffff81a22238 a1 : ffffffff81803e10\n[ 0.000000] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000\n[ 0.000000] a5 : 0000000000000000 a6 : ffffffff8000989c a7 : 0000000052464e43\n[ 0.000000] s2 : ffffffff81a220c8 s3 : 0000000000000000 s4 : 0000000000000000\n[ 0.000000] s5 : 0000000000000000 s6 : 0000000200000100 s7 : 0000000000000001\n[ 0.000000] s8 : ffffffe07fe04040 s9 : ffffffff81a22c80 s10: 0000000000001000\n[ 0.000000] s11: 0000000000000004 t3 : 0000000000000001 t4 : 0000000000000008\n[ 0.000000] t5 : ffffffcf04000808 t6 : ffffffe3ffddf188\n[ 0.000000] status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000002\n[ 0.000000] [<ffffffff80007240>] riscv_cpuid_to_hartid_mask+0x6/0xae\n[ 0.000000] [<ffffffff80009474>] sbi_remote_fence_i+0x1e/0x26\n[ 0.000000] [<ffffffff8000b8f4>] flush_icache_all+0x12/0x1a\n[ 0.000000] [<ffffffff8000666c>] patch_text_nosync+0x26/0x32\n[ 0.000000] [<ffffffff8000884e>] ftrace_init_nop+0x52/0x8c\n[ 0.000000] [<ffffffff800f051e>] ftrace_process_locs.isra.0+0x29c/0x360\n[ 0.000000] [<ffffffff80a0e3c6>] ftrace_init+0x80/0x130\n[ 0.000000] [<ffffffff80a00f8c>] start_kernel+0x5c4/0x8f6\n[ 0.000000] ---[ end trace f67eb9af4d8d492b ]---\n[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!\n[ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---\n\nWhile ftrace is looping over a list of addresses to patch, it always failed\nwhen patching the same function: riscv_cpuid_to_hartid_mask. Looking at the\nbacktrace, the illegal instruction is encountered in this same function.\nHowever, patch_text_nosync, after patching the instructions, calls\nflush_icache_range. But looking at what happens in this function:\n\nflush_icache_range -> flush_icache_all\n -> sbi_remote_fence_i\n -> __sbi_rfence_v02\n -> riscv_cpuid_to_hartid_mask\n\nThe icache and dcache of the current cpu are never synchronized between the\npatching of riscv_cpuid_to_hartid_mask and calling this same function.\n\nSo fix this by flushing the current cpu's icache before asking for the other\ncpus to do the same."
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"arch/riscv/mm/cacheflush.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "fab957c11efe2f405e08b9f0d080524bc2631428",
|
|
"lessThan": "427faa29e06f0709476ea1bd59758f997ec8b64e",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "fab957c11efe2f405e08b9f0d080524bc2631428",
|
|
"lessThan": "f1c7aa87c423e765e3862349c2f095fdfccdd9b3",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "fab957c11efe2f405e08b9f0d080524bc2631428",
|
|
"lessThan": "bb8958d5dc79acbd071397abb57b8756375fe1ce",
|
|
"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/riscv/mm/cacheflush.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4.15",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "4.15",
|
|
"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": "4.15",
|
|
"versionEndExcluding": "5.10.73"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.15",
|
|
"versionEndExcluding": "5.14.12"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.15",
|
|
"versionEndExcluding": "5.15"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/427faa29e06f0709476ea1bd59758f997ec8b64e"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f1c7aa87c423e765e3862349c2f095fdfccdd9b3"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/bb8958d5dc79acbd071397abb57b8756375fe1ce"
|
|
}
|
|
],
|
|
"title": "riscv: Flush current cpu icache before other cpus",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"title": "CISA ADP Vulnrichment",
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2021-47414",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2024-05-23T17:52:58.625321Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-06-04T17:13:41.022Z"
|
|
}
|
|
},
|
|
{
|
|
"providerMetadata": {
|
|
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
|
"shortName": "CVE",
|
|
"dateUpdated": "2024-08-04T05:39:59.118Z"
|
|
},
|
|
"title": "CVE Program Container",
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/427faa29e06f0709476ea1bd59758f997ec8b64e",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f1c7aa87c423e765e3862349c2f095fdfccdd9b3",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/bb8958d5dc79acbd071397abb57b8756375fe1ce",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
} |