mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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37 lines
3.1 KiB
JSON
37 lines
3.1 KiB
JSON
{
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"id": "CVE-2023-52531",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-03-02T22:15:48.613",
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"lastModified": "2024-03-04T13:58:23.447",
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"vulnStatus": "Awaiting Analysis",
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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\nwifi: iwlwifi: mvm: Fix a memory corruption issue\n\nA few lines above, space is kzalloc()'ed for:\n\tsizeof(struct iwl_nvm_data) +\n\tsizeof(struct ieee80211_channel) +\n\tsizeof(struct ieee80211_rate)\n\n'mvm->nvm_data' is a 'struct iwl_nvm_data', so it is fine.\n\nAt the end of this structure, there is the 'channels' flex array.\nEach element is of type 'struct ieee80211_channel'.\nSo only 1 element is allocated in this array.\n\nWhen doing:\n mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;\nWe point at the first element of the 'channels' flex array.\nSo this is fine.\n\nHowever, when doing:\n mvm->nvm_data->bands[0].bitrates =\n\t\t\t(void *)((u8 *)mvm->nvm_data->channels + 1);\nbecause of the \"(u8 *)\" cast, we add only 1 to the address of the beginning\nof the flex array.\n\nIt is likely that we want point at the 'struct ieee80211_rate' allocated\njust after.\n\nRemove the spurious casting so that the pointer arithmetic works as\nexpected."
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: mvm: soluciona un problema de corrupci\u00f3n de memoria Unas pocas l\u00edneas arriba, se kzalloc()'ed espacio para: sizeof(struct iwl_nvm_data) + sizeof(struct ieee80211_channel) + sizeof (struct ieee80211_rate) 'mvm->nvm_data' es una 'struct iwl_nvm_data', por lo que est\u00e1 bien. Al final de esta estructura, se encuentra la matriz flexible de 'canales'. Cada elemento es de tipo 'struct ieee80211_channel'. Entonces solo se asigna 1 elemento en esta matriz. Al hacer: mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels; Apuntamos al primer elemento de la matriz flexible 'canales'. Entonces esto est\u00e1 bien. Sin embargo, al hacer: mvm->nvm_data->bands[0].bitrates = (void *)((u8 *)mvm->nvm_data->channels + 1); debido a la conversi\u00f3n \"(u8 *)\", agregamos solo 1 a la direcci\u00f3n del comienzo de la matriz flexible. Es probable que queramos apuntar a la 'estructura ieee80211_rate' asignada justo despu\u00e9s. Retire la fundici\u00f3n espuria para que la aritm\u00e9tica del puntero funcione como se esperaba."
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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/6b3223449c959a8be94a1f042288059e40fcccb0",
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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/7c8faa31080342aec4903c9acb20caf82fcca1ef",
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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/8ba438ef3cacc4808a63ed0ce24d4f0942cfe55d",
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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/f06cdd8d4ba5252986f51f80cc30263636397128",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |