CVE-2023-52531
Vulnerability from cvelistv5
Published
2024-03-02 21:52
Modified
2024-11-04 14:48
Severity ?
Summary
wifi: iwlwifi: mvm: Fix a memory corruption issue
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6b3223449c959a8be94a1f042288059e40fcccb0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c8faa31080342aec4903c9acb20caf82fcca1efPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ba438ef3cacc4808a63ed0ce24d4f0942cfe55dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f06cdd8d4ba5252986f51f80cc30263636397128Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6b3223449c959a8be94a1f042288059e40fcccb0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7c8faa31080342aec4903c9acb20caf82fcca1efPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8ba438ef3cacc4808a63ed0ce24d4f0942cfe55dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f06cdd8d4ba5252986f51f80cc30263636397128Patch
Impacted products
Vendor Product Version
Linux Linux Version: 3.9
Show details on NVD website

To clipboard 

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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()\u0027ed for:\n\tsizeof(struct iwl_nvm_data) +\n\tsizeof(struct ieee80211_channel) +\n\tsizeof(struct ieee80211_rate)\n\n\u0027mvm-\u003envm_data\u0027 is a \u0027struct iwl_nvm_data\u0027, so it is fine.\n\nAt the end of this structure, there is the \u0027channels\u0027 flex array.\nEach element is of type \u0027struct ieee80211_channel\u0027.\nSo only 1 element is allocated in this array.\n\nWhen doing:\n  mvm-\u003envm_data-\u003ebands[0].channels = mvm-\u003envm_data-\u003echannels;\nWe point at the first element of the \u0027channels\u0027 flex array.\nSo this is fine.\n\nHowever, when doing:\n  mvm-\u003envm_data-\u003ebands[0].bitrates =\n\t\t\t(void *)((u8 *)mvm-\u003envm_data-\u003echannels + 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 \u0027struct ieee80211_rate\u0027 allocated\njust after.\n\nRemove the spurious casting so that the pointer arithmetic works as\nexpected."
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    "dateReserved": "2024-02-20T12:30:33.319Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52531\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-02T22:15:48.613\",\"lastModified\":\"2024-12-11T15:28:47.893\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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()\u0027ed for:\\n\\tsizeof(struct iwl_nvm_data) +\\n\\tsizeof(struct ieee80211_channel) +\\n\\tsizeof(struct ieee80211_rate)\\n\\n\u0027mvm-\u003envm_data\u0027 is a \u0027struct iwl_nvm_data\u0027, so it is fine.\\n\\nAt the end of this structure, there is the \u0027channels\u0027 flex array.\\nEach element is of type \u0027struct ieee80211_channel\u0027.\\nSo only 1 element is allocated in this array.\\n\\nWhen doing:\\n  mvm-\u003envm_data-\u003ebands[0].channels = mvm-\u003envm_data-\u003echannels;\\nWe point at the first element of the \u0027channels\u0027 flex array.\\nSo this is fine.\\n\\nHowever, when doing:\\n  mvm-\u003envm_data-\u003ebands[0].bitrates =\\n\\t\\t\\t(void *)((u8 *)mvm-\u003envm_data-\u003echannels + 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 \u0027struct ieee80211_rate\u0027 allocated\\njust after.\\n\\nRemove the spurious casting so that the pointer arithmetic works as\\nexpected.\"},{\"lang\":\"es\",\"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()\u0027ed espacio para: sizeof(struct iwl_nvm_data) + sizeof(struct ieee80211_channel) + sizeof (struct ieee80211_rate) \u0027mvm-\u0026gt;nvm_data\u0027 es una \u0027struct iwl_nvm_data\u0027, por lo que est\u00e1 bien. Al final de esta estructura, se encuentra la matriz flexible de \u0027canales\u0027. Cada elemento es de tipo \u0027struct ieee80211_channel\u0027. Entonces solo se asigna 1 elemento en esta matriz. Al hacer: mvm-\u0026gt;nvm_data-\u0026gt;bands[0].channels = mvm-\u0026gt;nvm_data-\u0026gt;channels; Apuntamos al primer elemento de la matriz flexible \u0027canales\u0027. Entonces esto est\u00e1 bien. Sin embargo, al hacer: mvm-\u0026gt;nvm_data-\u0026gt;bands[0].bitrates = (void *)((u8 *)mvm-\u0026gt;nvm_data-\u0026gt;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 \u0027estructura ieee80211_rate\u0027 asignada justo despu\u00e9s. Retire la fundici\u00f3n espuria para que la aritm\u00e9tica del puntero funcione como se esperaba.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.9\",\"versionEndExcluding\":\"5.15.135\",\"matchCriteriaId\":\"FA1C2331-7851-4FAC-B2E1-436FC160FDC2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.57\",\"matchCriteriaId\":\"8629E5D1-351D-4D4B-8D05-E10BD4A1CFD0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.5.7\",\"matchCriteriaId\":\"830A824C-F212-4FDC-ADEF-0EBEC6B2365B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"84267A4F-DBC2-444F-B41D-69E15E1BEC97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB440208-241C-4246-9A83-C1715C0DAA6C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"0DC421F1-3D5A-4BEF-BF76-4E468985D20B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"00AB783B-BE05-40E8-9A55-6AA457D95031\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6b3223449c959a8be94a1f042288059e40fcccb0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7c8faa31080342aec4903c9acb20caf82fcca1ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8ba438ef3cacc4808a63ed0ce24d4f0942cfe55d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f06cdd8d4ba5252986f51f80cc30263636397128\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6b3223449c959a8be94a1f042288059e40fcccb0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7c8faa31080342aec4903c9acb20caf82fcca1ef\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8ba438ef3cacc4808a63ed0ce24d4f0942cfe55d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f06cdd8d4ba5252986f51f80cc30263636397128\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
  }
}


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