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https://github.com/fkie-cad/nvd-json-data-feeds.git
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25 lines
1.5 KiB
JSON
25 lines
1.5 KiB
JSON
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{
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"id": "CVE-2024-43840",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-08-17T10:15:09.517",
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"lastModified": "2024-08-17T10:15:09.517",
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"vulnStatus": "Received",
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"cveTags": [],
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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\nbpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG\n\nWhen BPF_TRAMP_F_CALL_ORIG is set, the trampoline calls\n__bpf_tramp_enter() and __bpf_tramp_exit() functions, passing them\nthe struct bpf_tramp_image *im pointer as an argument in R0.\n\nThe trampoline generation code uses emit_addr_mov_i64() to emit\ninstructions for moving the bpf_tramp_image address into R0, but\nemit_addr_mov_i64() assumes the address to be in the vmalloc() space\nand uses only 48 bits. Because bpf_tramp_image is allocated using\nkzalloc(), its address can use more than 48-bits, in this case the\ntrampoline will pass an invalid address to __bpf_tramp_enter/exit()\ncausing a kernel crash.\n\nFix this by using emit_a64_mov_i64() in place of emit_addr_mov_i64()\nas it can work with addresses that are greater than 48-bits."
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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/19d3c179a37730caf600a97fed3794feac2b197b",
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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/6d218fcc707d6b2c3616b6cd24b948fd4825cfec",
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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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