{"action":"Upgrade linux to 6.12.115-2 or later.","affected":[{"fixed":"6.12.115-2","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.12.115-2"],"id":"tcs_01M6355K1HJD8WBNH1EZ3XRK1W","modified_at":"2026-11-07T06:00:16.913520652Z","published_at":"2026-10-28T11:17:32.317Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-99126","https://security-tracker.debian.org/tracker/CVE-2026-99126"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-99126#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-99126"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: s390/ctcm: Prevent XID null dereference The mpc_validate_xid() function sets grp->saved_xid2->xid2_flag2 to 0x40 to signal XID valid"}