{"cve":"CVE-2026-52905","nvd":{"published":"2026-06-09T14:16:44.950","modified":"2026-07-23T08:10:00.137","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/core: disallow non-power of two min_region_sz on damon_start()\n\nCommit d8f867fa0825 (\"mm/damon: add damon_ctx->min_sz_region\") introduced\na bug that allows unaligned DAMON region address ranges.  Commit\nc80f46ac228b (\"mm/damon/core: disallow non-power of two min_region_sz\")\nfixed it, but only for damon_commit_ctx() use case.  Still, DAMON sysfs\ninterface can emit non-power of two min_region_sz via damon_start().  Fix\nthe path by adding the is_power_of_2() check on damon_start().\n\nThe issue was discovered by sashiko [1].","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-1284"],"references":["https://git.kernel.org/stable/c/1de2db19a6028abe7d905875922faef5b873de67","https://git.kernel.org/stable/c/89b6226b6c2a4add3939f361653a47c212d6ab75","https://git.kernel.org/stable/c/95093e5cb4c5b50a5b1a4b79f2942b62744bd66a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-52905","score":0.00112,"percentile":0.01381,"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."]}