{"cve":"CVE-2021-47351","nvd":{"published":"2024-05-21T15:15:21.553","modified":"2026-08-04T10:16:59.280","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix races between xattr_{set|get} and listxattr operations\n\nUBIFS may occur some problems with concurrent xattr_{set|get} and\nlistxattr operations, such as assertion failure, memory corruption,\nstale xattr value[1].\n\nFix it by importing a new rw-lock in @ubifs_inode to serilize write\noperations on xattr, concurrent read operations are still effective,\njust like ext4.\n\n[1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com","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-617","CWE-787"],"references":["https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6","https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08","https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82","https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386","https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47351","score":0.00247,"percentile":0.16058,"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."]}