{"id":"CVE-2026-53092","summary":"bpf: Fix linked reg delta tracking when src_reg == dst_reg","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix linked reg delta tracking when src_reg == dst_reg\n\nConsider the case of rX += rX where src_reg and dst_reg are pointers to\nthe same bpf_reg_state in adjust_reg_min_max_vals(). The latter first\nmodifies the dst_reg in-place, and later in the delta tracking, the\nsubsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the\npost-{add,sub} value instead of the original source.\n\nThis is problematic since it sets an incorrect delta, which sync_linked_regs()\nthen propagates to linked registers, thus creating a verifier-vs-runtime\nmismatch. Fix it by just skipping this corner case.","modified":"2026-07-15T01:49:06.966388498Z","published":"2026-06-24T16:30:31.168Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53092.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d7f14173c0d5866c3cae759dee560ad1bed10d2e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53092.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-53092"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53092.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53092"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492362"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"98d7ca374ba4b39e7535613d40e159f09ca14da2"},{"fixed":"d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066"},{"fixed":"cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de"},{"fixed":"d7f14173c0d5866c3cae759dee560ad1bed10d2e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53092.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.11.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53092.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}