{"id":"DEBIAN-CVE-2026-53078","details":"In the Linux kernel, the following vulnerability has been resolved:  bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops  When a BPF sock_ops program accesses ctx fields with dst_reg == src_reg, the SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the destination register in the !fullsock / !locked_tcp_sock path.  Both macros borrow a temporary register to check is_fullsock / is_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the ctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with a request_sock), dst_reg should be zeroed but is not, leaving the stale ctx pointer:   - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks    as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,    leading to stack-out-of-bounds access in helpers like    bpf_skc_to_tcp6_sock().   - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the    verifier believes is a SCALAR_VALUE, leaking a kernel pointer.  Fix both macros by:  - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the    added instruction.  - Adding BPF_MOV64_IMM(si-\u003edst_reg, 0) after the temp register    restore in the !fullsock path, placed after the restore because    dst_reg == src_reg means we need src_reg intact to read ctx-\u003etemp.","modified":"2026-10-30T10:01:58.054163641Z","published":"2026-06-24T17:17:21.850Z","upstream":["CVE-2026-53078"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-53078"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.190-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.153-1","6.1.158-1","6.1.159-1","6.1.162-1","6.1.164-1","6.1.170-1","6.1.170-2","6.1.170-3","6.1.172-1","6.1.174-1","6.1.176-1","6.1.177-1","6.1.180-1","6.1.187-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not 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