{"action":"Upgrade linux to 6.3.7-1 or later.","affected":[{"fixed":"6.3.7-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.3.7-1"],"id":"tcs_01M5NJTCPN1CVJ226VG06CTJY5","modified_at":"2026-10-26T18:02:39.723208447Z","published_at":"2025-12-09T01:16:49.280Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-53781","https://security-tracker.debian.org/tracker/CVE-2023-53781"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-53781#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-53781"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in tcp_write_timer_handler(). With Eric's ref tracker, syzbot finally found a repro for use-after-free in tc"}