{"cve":"CVE-2021-46920","nvd":{"published":"2024-02-27T07:15:08.987","modified":"2026-06-17T04:15:51.080","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback\n\nCurrent code blindly writes over the SWERR and the OVERFLOW bits. Write\nback the bits actually read instead so the driver avoids clobbering the\nOVERFLOW bit that comes after the register is read.","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:H/A:N","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8","https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d","https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7f","https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8","https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2021-46920","score":0.00218,"percentile":0.12305,"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."]}