{"cve":"CVE-2022-49849","nvd":{"published":"2025-05-01T15:16:08.450","modified":"2026-06-17T05:19:18.053","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix match incorrectly in dev_args_match_device\n\nsyzkaller found a failed assertion:\n\n  assertion failed: (args->devid != (u64)-1) || args->missing, in fs/btrfs/volumes.c:6921\n\nThis can be triggered when we set devid to (u64)-1 by ioctl. In this\ncase, the match of devid will be skipped and the match of device may\nsucceed incorrectly.\n\nPatch 562d7b1512f7 introduced this function which is used to match device.\nThis function contains two matching scenarios, we can distinguish them by\nchecking the value of args->missing rather than check whether args->devid\nand args->uuid is default value.","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":[],"references":["https://git.kernel.org/stable/c/0fca385d6ebc3cabb20f67bcf8a71f1448bdc001","https://git.kernel.org/stable/c/bc6c127c377010f136360552ebf91c2723081c1b","https://git.kernel.org/stable/c/c9fe4719c662e0af17eea723cf345e37719fd3c9"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:22.920403922+00:00"},"epss":{"cve":"CVE-2022-49849","score":0.00203,"percentile":0.10317,"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."]}