mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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37 lines
2.2 KiB
JSON
37 lines
2.2 KiB
JSON
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{
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"id": "CVE-2024-50163",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-11-07T10:15:07.627",
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"lastModified": "2024-11-07T10:15:07.627",
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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: Make sure internal and UAPI bpf_redirect flags don't overlap\n\nThe bpf_redirect_info is shared between the SKB and XDP redirect paths,\nand the two paths use the same numeric flag values in the ri->flags\nfield (specifically, BPF_F_BROADCAST == BPF_F_NEXTHOP). This means that\nif skb bpf_redirect_neigh() is used with a non-NULL params argument and,\nsubsequently, an XDP redirect is performed using the same\nbpf_redirect_info struct, the XDP path will get confused and end up\ncrashing, which syzbot managed to trigger.\n\nWith the stack-allocated bpf_redirect_info, the structure is no longer\nshared between the SKB and XDP paths, so the crash doesn't happen\nanymore. However, different code paths using identically-numbered flag\nvalues in the same struct field still seems like a bit of a mess, so\nthis patch cleans that up by moving the flag definitions together and\nredefining the three flags in BPF_F_REDIRECT_INTERNAL to not overlap\nwith the flags used for XDP. It also adds a BUILD_BUG_ON() check to make\nsure the overlap is not re-introduced by mistake."
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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/09d88791c7cd888d5195c84733caf9183dcfbd16",
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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/0fca5ed4be8e8bfbfb9bd97845af596bab7192d3",
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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/314dbee9fe4f5cee36435465de52c988d7caa466",
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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/4e1e428533845d48828bd3875c0e92e8565b9962",
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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/cec288e05ceac9a0d3a3a1fd279534b11844c826",
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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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