100 lines
5.4 KiB
JSON
100 lines
5.4 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2022-49964",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-06-18T10:57:27.384Z",
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"datePublished": "2025-06-18T11:00:29.710Z",
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"dateUpdated": "2026-05-11T19:10:06.395Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T19:10:06.395Z"
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},
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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\narm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level\n\nThough acpi_find_last_cache_level() always returned signed value and the\ndocument states it will return any errors caused by lack of a PPTT table,\nit never returned negative values before.\n\nCommit 0c80f9e165f8 (\"ACPI: PPTT: Leave the table mapped for the runtime usage\")\nhowever changed it by returning -ENOENT if no PPTT was found. The value\nreturned from acpi_find_last_cache_level() is then assigned to unsigned\nfw_level.\n\nIt will result in the number of cache leaves calculated incorrectly as\na huge value which will then cause the following warning from __alloc_pages\nas the order would be great than MAX_ORDER because of incorrect and huge\ncache leaves value.\n\n | WARNING: CPU: 0 PID: 1 at mm/page_alloc.c:5407 __alloc_pages+0x74/0x314\n | Modules linked in:\n | CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-10393-g7c2a8d3ac4c0 #73\n | pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n | pc : __alloc_pages+0x74/0x314\n | lr : alloc_pages+0xe8/0x318\n | Call trace:\n | __alloc_pages+0x74/0x314\n | alloc_pages+0xe8/0x318\n | kmalloc_order_trace+0x68/0x1dc\n | __kmalloc+0x240/0x338\n | detect_cache_attributes+0xe0/0x56c\n | update_siblings_masks+0x38/0x284\n | store_cpu_topology+0x78/0x84\n | smp_prepare_cpus+0x48/0x134\n | kernel_init_freeable+0xc4/0x14c\n | kernel_init+0x2c/0x1b4\n | ret_from_fork+0x10/0x20\n\nFix the same by changing fw_level to be signed integer and return the\nerror from init_cache_level() early in case of error."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/arm64/kernel/cacheinfo.c"
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],
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"versions": [
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{
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"version": "f03d253ba71994b196f342a7acad448a56812a8c",
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"lessThan": "a754ee1c66bd0a23e613f0bf865053b29cb90e16",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "0c80f9e165f8f9cca743d7b6cbdb54362da297e0",
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"lessThan": "e75d18cecbb3805895d8ed64da4f78575ec96043",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/arm64/kernel/cacheinfo.c"
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],
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"versions": [
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{
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"version": "5.19.4",
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"lessThan": "5.19.7",
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"status": "affected",
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"versionType": "semver"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.19.4",
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"versionEndExcluding": "5.19.7"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/a754ee1c66bd0a23e613f0bf865053b29cb90e16"
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},
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{
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"url": "https://git.kernel.org/stable/c/e75d18cecbb3805895d8ed64da4f78575ec96043"
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}
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],
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"title": "arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |