{"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":"2026-09-17T16:07:26.104Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:07:26.104Z"},"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-rc1","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-rc1"}]}]}],"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"}}}}