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https://github.com/fkie-cad/nvd-json-data-feeds.git
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28 lines
1.7 KiB
JSON
28 lines
1.7 KiB
JSON
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{
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"id": "CVE-2023-52874",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-05-21T16:15:24.157",
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"lastModified": "2024-05-21T16:53:56.550",
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"vulnStatus": "Awaiting Analysis",
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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\nx86/tdx: Zero out the missing RSI in TDX_HYPERCALL macro\n\nIn the TDX_HYPERCALL asm, after the TDCALL instruction returns from the\nuntrusted VMM, the registers that the TDX guest shares to the VMM need\nto be cleared to avoid speculative execution of VMM-provided values.\n\nRSI is specified in the bitmap of those registers, but it is missing\nwhen zeroing out those registers in the current TDX_HYPERCALL.\n\nIt was there when it was originally added in commit 752d13305c78\n(\"x86/tdx: Expand __tdx_hypercall() to handle more arguments\"), but was\nlater removed in commit 1e70c680375a (\"x86/tdx: Do not corrupt\nframe-pointer in __tdx_hypercall()\"), which was correct because %rsi is\nlater restored in the \"pop %rsi\". However a later commit 7a3a401874be\n(\"x86/tdx: Drop flags from __tdx_hypercall()\") removed that \"pop %rsi\"\nbut forgot to add the \"xor %rsi, %rsi\" back.\n\nFix by adding it back."
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/2191950d35d8f81620ea8d4e04d983f664fe3a8a",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/5d092b66119d774853cc9308522620299048a662",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/de4c5bacca4f50233f1f791bec9eeb4dee1b14cd",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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}
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