CVE-2026-90212

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90212", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.793Z", "datePublished": "2026-09-17T16:07:26.104Z", "dateUpdated": "2026-10-19T08:59:48.329Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:59:48.329Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/efi: Avoid voluntary preemption with efi_mm installed\n\nGus reports a bad kernel memory access when using software PAN\n(CONFIG_ARM64_SW_TTBR0_PAN=y) on a machine with support for EFI runtime\nservices:\n\n Unable to handle kernel access to user memory outside uaccess routines\n at virtual address 00000000f322ff30\n Mem abort info:\n ESR = 0x0000000096000004\n FSC = 0x04: level 0 translation fault\n Internal error: Oops: 0000000096000004 [#1] SMP\n Workqueue: efi_rts_wq efi_call_rts\n pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : efi_call_rts+0xd8/0x288\n Call trace:\n efi_call_rts+0xd8/0x288 (P)\n process_one_work+0x178/0x4f8\n worker_thread+0x194/0x328\n\nThis is because the fpsimd context management code called from\n__efi_fpsimd_begin() can preempt voluntarily, returning later to the EFI\ncode with an incorrect value for TTBR0_EL1 thanks to the deferred mm\nswitching used by the software PAN implementation.\n\nSince EFI runtime services cannot preempt voluntarily and because the\nfpsimd switching code does not rely on the TTBR0_EL1 mappings, simply\nreorder the fpsimd switch so that it occurs before we change the\npage-table."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/kernel/efi.c"], "versions": [{"version": "a5baf582f4c026c25a206ac121bceade926aec74", "lessThan": "829539c4a650544cb8e5e8690f2c2d0aa2c0e298", "status": "affected", "versionType": "git"}, {"version": "a5baf582f4c026c25a206ac121bceade926aec74", "lessThan": "e98a9d0146372b046d863164025a66ab4488b972", "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/arm64/kernel/efi.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.19", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/829539c4a650544cb8e5e8690f2c2d0aa2c0e298"}, {"url": "https://git.kernel.org/stable/c/e98a9d0146372b046d863164025a66ab4488b972"}], "title": "arm64/efi: Avoid voluntary preemption with efi_mm installed", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/arm64/kernel/efi.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "829539c4a650544cb8e5e8690f2c2d0aa2c0e298", "status": "affected", "version": "a5baf582f4c026c25a206ac121bceade926aec74", "versionType": "git"}, {"lessThan": "e98a9d0146372b046d863164025a66ab4488b972", "status": "affected", "version": "a5baf582f4c026c25a206ac121bceade926aec74", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/arm64/kernel/efi.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"lessThan": "6.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/efi: Avoid voluntary preemption with efi_mm installed\n\nGus reports a bad kernel memory access when using software PAN\n(CONFIG_ARM64_SW_TTBR0_PAN=y) on a machine with support for EFI runtime\nservices:\n\n Unable to handle kernel access to user memory outside uaccess routines\n at virtual address 00000000f322ff30\n Mem abort info:\n ESR = 0x0000000096000004\n FSC = 0x04: level 0 translation fault\n Internal error: Oops: 0000000096000004 [#1] SMP\n Workqueue: efi_rts_wq efi_call_rts\n pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : efi_call_rts+0xd8/0x288\n Call trace:\n efi_call_rts+0xd8/0x288 (P)\n process_one_work+0x178/0x4f8\n worker_thread+0x194/0x328\n\nThis is because the fpsimd context management code called from\n__efi_fpsimd_begin() can preempt voluntarily, returning later to the EFI\ncode with an incorrect value for TTBR0_EL1 thanks to the deferred mm\nswitching used by the software PAN implementation.\n\nSince EFI runtime services cannot preempt voluntarily and because the\nfpsimd switching code does not rely on the TTBR0_EL1 mappings, simply\nreorder the fpsimd switch so that it occurs before we change the\npage-table."}], "id": "CVE-2026-90212", "lastModified": "2026-10-19T09:19:11.357", "metrics": {}, "published": "2026-09-17T17:17:16.430", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/829539c4a650544cb8e5e8690f2c2d0aa2c0e298"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e98a9d0146372b046d863164025a66ab4488b972"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5baf582f4c026c25a206ac121bceade926aec74,829539c4a650544cb8e5e8690f2c2d0aa2c0e298)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a5baf582f4c026c25a206ac121bceade926aec74,e98a9d0146372b046d863164025a66ab4488b972)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-18T21:30:14.145217+00:00", "updated": "2026-09-19T03:15:16.988846+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-200", "CWE-665"]}