{"cve":"CVE-2022-49885","nvd":{"published":"2025-05-01T15:16:13.480","modified":"2026-06-17T05:19:25.183","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: Fix integer overflow in ghes_estatus_pool_init()\n\nChange num_ghes from int to unsigned int, preventing an overflow\nand causing subsequent vmalloc() to fail.\n\nThe overflow happens in ghes_estatus_pool_init() when calculating\nlen during execution of the statement below as both multiplication\noperands here are signed int:\n\nlen += (num_ghes * GHES_ESOURCE_PREALLOC_MAX_SIZE);\n\nThe following call trace is observed because of this bug:\n\n[    9.317108] swapper/0: vmalloc error: size 18446744071562596352, exceeds total pages, mode:0xcc0(GFP_KERNEL), nodemask=(null),cpuset=/,mems_allowed=0-1\n[    9.317131] Call Trace:\n[    9.317134]  <TASK>\n[    9.317137]  dump_stack_lvl+0x49/0x5f\n[    9.317145]  dump_stack+0x10/0x12\n[    9.317146]  warn_alloc.cold+0x7b/0xdf\n[    9.317150]  ? __device_attach+0x16a/0x1b0\n[    9.317155]  __vmalloc_node_range+0x702/0x740\n[    9.317160]  ? device_add+0x17f/0x920\n[    9.317164]  ? dev_set_name+0x53/0x70\n[    9.317166]  ? platform_device_add+0xf9/0x240\n[    9.317168]  __vmalloc_node+0x49/0x50\n[    9.317170]  ? ghes_estatus_pool_init+0x43/0xa0\n[    9.317176]  vmalloc+0x21/0x30\n[    9.317177]  ghes_estatus_pool_init+0x43/0xa0\n[    9.317179]  acpi_hest_init+0x129/0x19c\n[    9.317185]  acpi_init+0x434/0x4a4\n[    9.317188]  ? acpi_sleep_proc_init+0x2a/0x2a\n[    9.317190]  do_one_initcall+0x48/0x200\n[    9.317195]  kernel_init_freeable+0x221/0x284\n[    9.317200]  ? rest_init+0xe0/0xe0\n[    9.317204]  kernel_init+0x1a/0x130\n[    9.317205]  ret_from_fork+0x22/0x30\n[    9.317208]  </TASK>\n\n[ rjw: Subject and changelog edits ]","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-190"],"references":["https://git.kernel.org/stable/c/43d2748394c3feb86c0c771466f5847e274fc043","https://git.kernel.org/stable/c/4c10c854113720cbfe75d4f51db79b700a629e73","https://git.kernel.org/stable/c/9edf20e5a1d805855e78f241cf221d741b50d482","https://git.kernel.org/stable/c/c50ec15725e005e9fb20bce69b6c23b135a4a9b7"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:22.920403922+00:00"},"epss":{"cve":"CVE-2022-49885","score":0.00223,"percentile":0.13005,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}