GHSA-4FQJ-GHW2-3JMF
Vulnerability from github – Published: 2024-05-17 15:31 – Updated: 2024-05-17 15:31In the Linux kernel, the following vulnerability has been resolved:
pstore: ram_core: fix possible overflow in persistent_ram_init_ecc()
In persistent_ram_init_ecc(), on 64-bit arches DIV_ROUND_UP() will return 64-bit value since persistent_ram_zone::buffer_size has type size_t which is derived from the 64-bit unsigned long, while the ecc_blocks variable this value gets assigned to has (always 32-bit) int type. Even if that value fits into int type, an overflow is still possible when calculating the size_t typed ecc_total variable further below since there's no cast to any 64-bit type before multiplication. Declaring the ecc_blocks variable as size_t should fix this mess...
Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
{
"affected": [],
"aliases": [
"CVE-2023-52685"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-17T15:15:19Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npstore: ram_core: fix possible overflow in persistent_ram_init_ecc()\n\nIn persistent_ram_init_ecc(), on 64-bit arches DIV_ROUND_UP() will return\n64-bit value since persistent_ram_zone::buffer_size has type size_t which\nis derived from the 64-bit *unsigned long*, while the ecc_blocks variable\nthis value gets assigned to has (always 32-bit) *int* type. Even if that\nvalue fits into *int* type, an overflow is still possible when calculating\nthe size_t typed ecc_total variable further below since there\u0027s no cast to\nany 64-bit type before multiplication. Declaring the ecc_blocks variable\nas *size_t* should fix this mess...\n\nFound by Linux Verification Center (linuxtesting.org) with the SVACE static\nanalysis tool.",
"id": "GHSA-4fqj-ghw2-3jmf",
"modified": "2024-05-17T15:31:11Z",
"published": "2024-05-17T15:31:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52685"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3b333cded94fbe5ce30d699b316c4715151268ae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/48dcfc42ce705b652c0619cb99846afc43029de9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/86222a8fc16ec517de8da2604d904c9df3a08e5d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8fb12524c86bdd542a54857d5d076b1b6778c78c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a34946ec3de88a16cc3a87fdab50aad06255a22b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/acd413da3e1f37582207cd6078a41d57c9011918"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d1fe1aede684bd014714dacfdc75586a9ad38657"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f9b891a7e8fcf83901f8507241e23e7420103b61"
}
],
"schema_version": "1.4.0",
"severity": []
}
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