CVE-2021-47090
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-08-04 05:24
Severity
Summary
mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()
References
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-47090",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T20:39:00.892083Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-06-26T20:40:06.570Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-04T05:24:39.860Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"mm/memory-failure.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "1f2070767401",
"status": "affected",
"version": "b94e02822deb",
"versionType": "git"
},
{
"lessThan": "c691e7575eff",
"status": "affected",
"version": "b94e02822deb",
"versionType": "git"
},
{
"lessThan": "2a57d83c78f8",
"status": "affected",
"version": "b94e02822deb",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"mm/memory-failure.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"lessThan": "5.10",
"status": "unaffected",
"version": "0",
"versionType": "custom"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.89",
"versionType": "custom"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.12",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()\n\nHulk Robot reported a panic in put_page_testzero() when testing\nmadvise() with MADV_SOFT_OFFLINE. The BUG() is triggered when retrying\nget_any_page(). This is because we keep MF_COUNT_INCREASED flag in\nsecond try but the refcnt is not increased.\n\n page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)\n ------------[ cut here ]------------\n kernel BUG at include/linux/mm.h:737!\n invalid opcode: 0000 [#1] PREEMPT SMP\n CPU: 5 PID: 2135 Comm: sshd Tainted: G B 5.16.0-rc6-dirty #373\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\n RIP: release_pages+0x53f/0x840\n Call Trace:\n free_pages_and_swap_cache+0x64/0x80\n tlb_flush_mmu+0x6f/0x220\n unmap_page_range+0xe6c/0x12c0\n unmap_single_vma+0x90/0x170\n unmap_vmas+0xc4/0x180\n exit_mmap+0xde/0x3a0\n mmput+0xa3/0x250\n do_exit+0x564/0x1470\n do_group_exit+0x3b/0x100\n __do_sys_exit_group+0x13/0x20\n __x64_sys_exit_group+0x16/0x20\n do_syscall_64+0x34/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n Modules linked in:\n ---[ end trace e99579b570fe0649 ]---\n RIP: 0010:release_pages+0x53f/0x840"
}
],
"providerMetadata": {
"dateUpdated": "2024-05-29T05:01:54.915Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5"
},
{
"url": "https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3"
},
{
"url": "https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418"
}
],
"title": "mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()",
"x_generator": {
"engine": "bippy-a5840b7849dd"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2021-47090",
"datePublished": "2024-03-04T18:10:28.887Z",
"dateReserved": "2024-02-29T22:33:44.300Z",
"dateUpdated": "2024-08-04T05:24:39.860Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2021-47090\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-04T18:15:07.610\",\"lastModified\":\"2024-03-05T13:41:01.900\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()\\n\\nHulk Robot reported a panic in put_page_testzero() when testing\\nmadvise() with MADV_SOFT_OFFLINE. The BUG() is triggered when retrying\\nget_any_page(). This is because we keep MF_COUNT_INCREASED flag in\\nsecond try but the refcnt is not increased.\\n\\n page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)\\n ------------[ cut here ]------------\\n kernel BUG at include/linux/mm.h:737!\\n invalid opcode: 0000 [#1] PREEMPT SMP\\n CPU: 5 PID: 2135 Comm: sshd Tainted: G B 5.16.0-rc6-dirty #373\\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\\n RIP: release_pages+0x53f/0x840\\n Call Trace:\\n free_pages_and_swap_cache+0x64/0x80\\n tlb_flush_mmu+0x6f/0x220\\n unmap_page_range+0xe6c/0x12c0\\n unmap_single_vma+0x90/0x170\\n unmap_vmas+0xc4/0x180\\n exit_mmap+0xde/0x3a0\\n mmput+0xa3/0x250\\n do_exit+0x564/0x1470\\n do_group_exit+0x3b/0x100\\n __do_sys_exit_group+0x13/0x20\\n __x64_sys_exit_group+0x16/0x20\\n do_syscall_64+0x34/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n Modules linked in:\\n ---[ end trace e99579b570fe0649 ]---\\n RIP: 0010:release_pages+0x53f/0x840\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mm/hwpoison: borre MF_COUNT_INCREASED antes de volver a intentar get_any_page() Hulk Robot inform\u00f3 un p\u00e1nico en put_page_testzero() al probar madvise() con MADV_SOFT_OFFLINE. El ERROR() se activa al volver a intentar get_any_page(). Esto se debe a que mantenemos el indicador MF_COUNT_INCREASED en el segundo intento pero el refcnt no aumenta. p\u00e1gina volcada porque: VM_BUG_ON_PAGE(page_ref_count(page) == 0) ------------[ cortar aqu\u00ed ]------------ ERROR del kernel en include/linux/mm .h:737! c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP CPU: 5 PID: 2135 Comm: sshd Contaminado: GB 5.16.0-rc6-dirty #373 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.13.0- 1ubuntu1.1 01/04/2014 RIP: release_pages+0x53f/0x840 Seguimiento de llamadas: free_pages_and_swap_cache+0x64/0x80 tlb_flush_mmu+0x6f/0x220 unmap_page_range+0xe6c/0x12c0 unmap_single_vma+0x90/0x170 unmap _vmas+0xc4/0x180 salida_mmap+0xde/0x3a0 mmput+ 0xa3/0x250 do_exit+0x564/0x1470 do_group_exit+0x3b/0x100 __do_sys_exit_group+0x13/0x20 __x64_sys_exit_group+0x16/0x20 do_syscall_64+0x34/0x80 Entry_SYSCALL_64_after_hwframe+ 0x44/0xae M\u00f3dulos vinculados en: ---[ end trace e99579b570fe0649 ]--- RIP: 0010:p\u00e1ginas_de_liberaci\u00f3n+0x53f/0x840\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1f207076740101fed87074a6bc924dbe806f08a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2a57d83c78f889bf3f54eede908d0643c40d5418\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c691e7575eff76e563b0199c23ec46bd454f43e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
Loading...