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vuln-cve/data/2022/49xxx/CVE-2022-49004.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2022-49004",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-08-22T01:27:53.643Z",
"datePublished": "2024-10-21T20:06:17.410Z",
"dateUpdated": "2026-05-11T18:51:20.868Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T18:51:20.868Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Sync efi page table's kernel mappings before switching\n\nThe EFI page table is initially created as a copy of the kernel page table.\nWith VMAP_STACK enabled, kernel stacks are allocated in the vmalloc area:\nif the stack is allocated in a new PGD (one that was not present at the\nmoment of the efi page table creation or not synced in a previous vmalloc\nfault), the kernel will take a trap when switching to the efi page table\nwhen the vmalloc kernel stack is accessed, resulting in a kernel panic.\n\nFix that by updating the efi kernel mappings before switching to the efi\npage table."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"arch/riscv/include/asm/efi.h",
"arch/riscv/include/asm/pgalloc.h"
],
"versions": [
{
"version": "b91540d52a08b65eb6a2b09132e1bd54fa82754c",
"lessThan": "fa7a7d185ef380546b4b1fed6f84f31dbae8cec7",
"status": "affected",
"versionType": "git"
},
{
"version": "b91540d52a08b65eb6a2b09132e1bd54fa82754c",
"lessThan": "96f479383d92944406d4b3f2bc03c2f640def9f1",
"status": "affected",
"versionType": "git"
},
{
"version": "b91540d52a08b65eb6a2b09132e1bd54fa82754c",
"lessThan": "3f105a742725a1b78766a55169f1d827732e62b8",
"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/include/asm/efi.h",
"arch/riscv/include/asm/pgalloc.h"
],
"versions": [
{
"version": "5.10",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.10",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.82",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.0.12",
"lessThanOrEqual": "6.0.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1",
"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": "5.15.82"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.0.12"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/fa7a7d185ef380546b4b1fed6f84f31dbae8cec7"
},
{
"url": "https://git.kernel.org/stable/c/96f479383d92944406d4b3f2bc03c2f640def9f1"
},
{
"url": "https://git.kernel.org/stable/c/3f105a742725a1b78766a55169f1d827732e62b8"
}
],
"title": "riscv: Sync efi page table's kernel mappings before switching",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2022-49004",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-10-22T13:14:45.523737Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2024-10-22T13:18:40.145Z"
}
}
]
}
}