{"action":"Upgrade linux to 6.4.11-1 or later.","affected":[{"fixed":"6.4.11-1","introduced":"0"}],"component":"linux","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["6.4.11-1"],"id":"tcs_01M5NJPCFMB1ZKVBX37PDNN4SJ","modified_at":"2026-10-23T18:05:26.123564765Z","published_at":"2025-09-17T15:15:38.100Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2023-53343","https://security-tracker.debian.org/tracker/CVE-2023-53343"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2023-53343#Debian:13/linux","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2023-53343"}],"summary":"In the Linux kernel, the following vulnerability has been resolved: icmp6: Fix null-ptr-deref of ip6_null_entry->rt6i_idev in icmp6_dev(). With some IPv6 Ext Hdr (RPL, SRv6, etc.), we can send a packe"}