ghsa-w4c2-47fv-3g9c
Vulnerability from github
Published
2024-06-19 15:30
Modified
2024-06-19 15:30
Details
In the Linux kernel, the following vulnerability has been resolved:
wifi: brcmfmac: pcie: handle randbuf allocation failure
The kzalloc() in brcmf_pcie_download_fw_nvram() will return null if the physical memory has run out. As a result, if we use get_random_bytes() to generate random bytes in the randbuf, the null pointer dereference bug will happen.
In order to prevent allocation failure, this patch adds a separate function using buffer on kernel stack to generate random bytes in the randbuf, which could prevent the kernel stack from overflow.
{ "affected": [], "aliases": [ "CVE-2024-38575" ], "database_specific": { "cwe_ids": [], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-06-19T14:15:17Z", "severity": null }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: pcie: handle randbuf allocation failure\n\nThe kzalloc() in brcmf_pcie_download_fw_nvram() will return null\nif the physical memory has run out. As a result, if we use\nget_random_bytes() to generate random bytes in the randbuf, the\nnull pointer dereference bug will happen.\n\nIn order to prevent allocation failure, this patch adds a separate\nfunction using buffer on kernel stack to generate random bytes in\nthe randbuf, which could prevent the kernel stack from overflow.", "id": "GHSA-w4c2-47fv-3g9c", "modified": "2024-06-19T15:30:53Z", "published": "2024-06-19T15:30:53Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38575" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4c" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3b" } ], "schema_version": "1.4.0", "severity": [] }
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Sightings
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Nomenclature
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