2024-04-10 19:08:10 +00:00
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{
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2024-04-10 20:09:35 +00:00
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"data_version": "4.0",
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2024-04-10 19:08:10 +00:00
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2021-47217",
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2024-04-10 20:09:35 +00:00
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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2024-04-10 19:08:10 +00:00
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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2024-04-10 20:09:35 +00:00
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails\n\nCheck for a valid hv_vp_index array prior to derefencing hv_vp_index when\nsetting Hyper-V's TSC change callback. If Hyper-V setup failed in\nhyperv_init(), the kernel will still report that it's running under\nHyper-V, but will have silently disabled nearly all functionality.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000010\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] SMP\n CPU: 4 PID: 1 Comm: swapper/0 Not tainted 5.15.0-rc2+ #75\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n RIP: 0010:set_hv_tscchange_cb+0x15/0xa0\n Code: <8b> 04 82 8b 15 12 17 85 01 48 c1 e0 20 48 0d ee 00 01 00 f6 c6 08\n ...\n Call Trace:\n kvm_arch_init+0x17c/0x280\n kvm_init+0x31/0x330\n vmx_init+0xba/0x13a\n do_one_initcall+0x41/0x1c0\n kernel_init_freeable+0x1f2/0x23b\n kernel_init+0x16/0x120\n ret_from_fork+0x22/0x30"
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "93286261de1b",
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"version_value": "b20ec58f8a6f"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "4.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.16",
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"status": "unaffected",
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2024-11-04 12:02:05 +00:00
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"versionType": "semver"
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2024-04-10 20:09:35 +00:00
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},
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{
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"version": "4.19.218",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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2024-11-04 12:02:05 +00:00
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"versionType": "semver"
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2024-04-10 20:09:35 +00:00
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},
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{
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"version": "5.4.162",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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2024-11-04 12:02:05 +00:00
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"versionType": "semver"
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2024-04-10 20:09:35 +00:00
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},
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{
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"version": "5.10.82",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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2024-11-04 12:02:05 +00:00
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"versionType": "semver"
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2024-04-10 20:09:35 +00:00
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},
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{
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"version": "5.15.5",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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2024-11-04 12:02:05 +00:00
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"versionType": "semver"
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2024-04-10 20:09:35 +00:00
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},
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{
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"version": "5.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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2024-11-04 13:02:23 +00:00
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"versionType": "original_commit_for_fix"
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2024-04-10 20:09:35 +00:00
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}
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],
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"defaultStatus": "affected"
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}
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/b20ec58f8a6f4fef32cc71480ddf824584e24743",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/b20ec58f8a6f4fef32cc71480ddf824584e24743"
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},
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{
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"url": "https://git.kernel.org/stable/c/b0e44dfb4e4c699cca33ede431b8d127e6e8d661",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/b0e44dfb4e4c699cca33ede431b8d127e6e8d661"
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},
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{
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"url": "https://git.kernel.org/stable/c/9c177eee116cf888276d3748cb176e72562cfd5c",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/9c177eee116cf888276d3748cb176e72562cfd5c"
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},
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{
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"url": "https://git.kernel.org/stable/c/8823ea27fff6084bbb4bc71d15378fae0220b1d8",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/8823ea27fff6084bbb4bc71d15378fae0220b1d8"
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},
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{
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"url": "https://git.kernel.org/stable/c/daf972118c517b91f74ff1731417feb4270625a4",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/daf972118c517b91f74ff1731417feb4270625a4"
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2024-04-10 19:08:10 +00:00
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}
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]
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2024-04-10 20:09:35 +00:00
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},
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"generator": {
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2024-11-04 13:02:23 +00:00
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"engine": "bippy-9e1c9544281a"
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2024-04-10 19:08:10 +00:00
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}
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}
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