{"action":"Upgrade linux to 5.10.38-1 or later.","affected":[{"fixed":"5.10.38-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["5.10.38-1"],"id":"tcs_01M5NFRV5PE3ENM02YEEEHW3HX","modified_at":"2026-10-23T18:03:37.815006605Z","published_at":"2021-06-04T02:15:07.253Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-3491","https://security-tracker.debian.org/tracker/CVE-2021-3491"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-3491#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-3491"}],"summary":"The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/<PID>/mem"}