{"cve":"CVE-2011-1021","nvd":{"published":"2012-06-21T23:55:01.897","modified":"2026-06-16T23:28:34.267","status":"Modified","description":"drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0","http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=526b4af47f44148c9d665e57723ed9f86634c6e3","http://www.openwall.com/lists/oss-security/2011/02/25/5","https://bugzilla.redhat.com/show_bug.cgi?id=680841","https://github.com/torvalds/linux/commit/526b4af47f44148c9d665e57723ed9f86634c6e3"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2011-1021","score":0.00928,"percentile":0.60567,"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."]}