188 lines
8.8 KiB
JSON
188 lines
8.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-98546",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-25T10:25:14.356Z",
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"datePublished": "2026-10-18T15:18:14.808Z",
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"dateUpdated": "2026-10-19T09:21:29.442Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T09:21:29.442Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/boot: Disable trapping of PMZR_EL0 writes to EL2\n\n__init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2.\nPMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in\nHDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host\ntraps to EL2, where the nVHE hypervisor has no handler and BUG()s. The\nkernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU\ndriver set PMUSERENR_EL0.UEN for a task with a user-read event, so a\nwrite from EL0 reaches the trap and takes the host down without a panic\nmessage.\n\nAccumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already\ndoes for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9\nbits."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"Documentation/arch/arm64/booting.rst",
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"arch/arm64/include/asm/el2_setup.h"
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],
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"versions": [
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{
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"version": "686d8f7b592f3466f44aea653c8147611b351c83",
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"lessThan": "bb8c90c86441c090e9036f019cf1b4d7894a2c40",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "858c7bfcb35e1100b58bb63c9f562d86e09418d9",
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"lessThan": "071f51188a5d8ec10535541255587976d12fc7d8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "858c7bfcb35e1100b58bb63c9f562d86e09418d9",
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"lessThan": "ce71865bf43f88bed9d9218e9218e537150be506",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "858c7bfcb35e1100b58bb63c9f562d86e09418d9",
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"lessThan": "2bc6b218717b9d08f466f88209251d54bc09b207",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "882f78400322c0aec4b641a7168adad9a66bc0c2",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.12.25",
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"lessThan": "6.12.112",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.14.4",
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"lessThan": "6.15",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"Documentation/arch/arm64/booting.rst",
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"arch/arm64/include/asm/el2_setup.h"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.112",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.55",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.9",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12.25",
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"versionEndExcluding": "6.12.112"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.18.55"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "7.2.9"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "7.3"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.14.4"
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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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{
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"url": "https://git.kernel.org/stable/c/bb8c90c86441c090e9036f019cf1b4d7894a2c40"
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},
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{
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"url": "https://git.kernel.org/stable/c/071f51188a5d8ec10535541255587976d12fc7d8"
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},
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{
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"url": "https://git.kernel.org/stable/c/ce71865bf43f88bed9d9218e9218e537150be506"
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},
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{
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"url": "https://git.kernel.org/stable/c/2bc6b218717b9d08f466f88209251d54bc09b207"
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}
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],
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"title": "arm64/boot: Disable trapping of PMZR_EL0 writes to EL2",
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"x_generator": {
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} |